WO2017122691A1 - 反射防止材 - Google Patents
反射防止材 Download PDFInfo
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- WO2017122691A1 WO2017122691A1 PCT/JP2017/000666 JP2017000666W WO2017122691A1 WO 2017122691 A1 WO2017122691 A1 WO 2017122691A1 JP 2017000666 W JP2017000666 W JP 2017000666W WO 2017122691 A1 WO2017122691 A1 WO 2017122691A1
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- epoxy
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- GOGZBMRXLADNEV-UHFFFAOYSA-N naphthalene-2,6-diamine Chemical compound C1=C(N)C=CC2=CC(N)=CC=C21 GOGZBMRXLADNEV-UHFFFAOYSA-N 0.000 description 1
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- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
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- YOURXVGYNVXQKT-UHFFFAOYSA-N oxacycloundecane-2,11-dione Chemical compound O=C1CCCCCCCCC(=O)O1 YOURXVGYNVXQKT-UHFFFAOYSA-N 0.000 description 1
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- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 1
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- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
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- SCPYDCQAZCOKTP-UHFFFAOYSA-N silanol Chemical compound [SiH3]O SCPYDCQAZCOKTP-UHFFFAOYSA-N 0.000 description 1
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- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
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- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
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- USFPINLPPFWTJW-UHFFFAOYSA-N tetraphenylphosphonium Chemical compound C1=CC=CC=C1[P+](C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 USFPINLPPFWTJW-UHFFFAOYSA-N 0.000 description 1
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- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 125000000725 trifluoropropyl group Chemical group [H]C([H])(*)C([H])([H])C(F)(F)F 0.000 description 1
- SRPWOOOHEPICQU-UHFFFAOYSA-N trimellitic anhydride Chemical compound OC(=O)C1=CC=C2C(=O)OC(=O)C2=C1 SRPWOOOHEPICQU-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- NLSXASIDNWDYMI-UHFFFAOYSA-N triphenylsilanol Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(O)C1=CC=CC=C1 NLSXASIDNWDYMI-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L101/00—Compositions of unspecified macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/013—Additives applied to the surface of polymers or polymer particles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
Definitions
- the present invention relates to an antireflection material.
- the present invention also relates to an optical semiconductor device in which an optical semiconductor element is sealed with the antireflection material.
- a light emitting device using an optical semiconductor element (LED element) as a light source
- LED element optical semiconductor element
- an optical semiconductor device in general, an optical semiconductor device in which an optical semiconductor element is mounted on a substrate (substrate for mounting an optical semiconductor element) and the optical semiconductor element is sealed with a transparent sealing material is widespread. is doing.
- the sealing material in such an optical semiconductor device is subjected to antireflection treatment on its surface in order to prevent a decrease in visibility due to total reflection of incident light such as illumination light from outside and sunlight. Yes.
- Patent Document 1 when the method of Patent Document 1 is applied to a resin for sealing an optical semiconductor, it is difficult to ensure the total luminous flux of the light source while providing a sufficient antireflection function. That is, when a sufficient amount of inorganic filler is added to obtain a sufficient antireflection function, the total luminous flux of the light source is greatly reduced, while the inorganic filler is reduced in order to prevent a decrease in the total luminous flux of the light source. In this case, it was revealed that there was a trade-off relationship that sufficient antireflection performance could not be obtained.
- an object of the present invention is to provide an antireflection material capable of preventing a decrease in the total luminous flux of a light source while having a sufficient antireflection function.
- the other object of this invention is to provide the said antireflection material which is a resin composition for optical semiconductor sealing.
- another object of the present invention is to provide an optical semiconductor device in which an optical semiconductor element is sealed with the antireflection material.
- the present inventors have formulated a porous filler as a filler in the resin layer constituting the antireflection material, and a sufficient antireflection function is imparted even with a small amount of addition. I found. As a result, an antireflection material having a sufficient antireflection function is provided without significantly reducing the total luminous flux of the light source, and it has been found that it is extremely suitable as a material for sealing an optical semiconductor element in an optical semiconductor device. The present invention has been completed.
- the present invention is an antireflection material comprising a resin layer in which a porous filler is dispersed, and the porous filler forms irregularities that suppress reflection on the surface of the resin layer, and the total amount of antireflection material (100 wt. %)),
- the content of the porous filler is 4 to 40% by weight.
- the porous filler may be an inorganic porous filler.
- the antireflection material before curing may be liquid.
- the amount of components that volatilize during curing relative to the total amount (100% by weight) of the antireflection material before curing may be 10% by weight or less.
- the resin layer may be made of a transparent curable resin composition.
- the curable resin composition may be composed of a composition containing at least one curable compound selected from the group consisting of an epoxy resin, a silicone resin, and an acrylic resin.
- the antireflection material may be an optical semiconductor sealing resin composition.
- the present invention also provides an optical semiconductor device in which an optical semiconductor element is sealed with the antireflection material.
- the present invention relates to the following.
- An antireflection material comprising a resin layer in which a porous filler is dispersed, wherein the porous filler forms irregularities that suppress reflection on the surface of the resin layer, and is based on the total amount (100% by weight) of the antireflection material.
- An antireflection material wherein the content of the porous filler is 4 to 40% by weight.
- the inorganic porous filler is an inorganic glass [eg, borosilicate glass, sodium borosilicate glass, sodium silicate glass, aluminum silicate glass, quartz, etc.], silica, alumina, zircon, calcium silicate, calcium phosphate, calcium carbonate, carbonic acid
- the inorganic porous filler has been subjected to a surface treatment [for example, a surface treatment with a surface treatment agent such as a metal oxide, a silane coupling agent, a titanium coupling agent, an organic acid, a polyol, or silicone].
- a surface treatment for example, a surface treatment with a surface treatment agent such as a metal oxide, a silane coupling agent, a titanium coupling agent, an organic acid, a polyol, or silicone.
- the antireflection material according to any one of [1] to [4] above.
- the reflection according to [4] or [5], wherein the porous silica is at least one kind of porous silica selected from the group consisting of fused silica, crystalline silica, high-purity synthetic silica, and colloidal silica. Prevention material.
- Organic porous filler is a styrene resin, acrylic resin, silicone resin, acrylic-styrene resin, vinyl chloride resin, vinylidene chloride resin, amide resin, urethane resin, phenol resin, styrene -Polymer porous material composed of at least one organic material selected from the group consisting of polymers (including cross-linked products of these polymers) such as conjugated diene resins, acrylic-conjugated diene resins, olefin resins, and cellulose resins.
- the antireflection material according to any one of [1] to [6] above, which is a sintered body, a polymer foam, or a gel porous body.
- the shape of the porous filler is at least one (preferably spherical or crushed) selected from the group consisting of powder, spherical, crushed, fibrous, acicular, and scale-like.
- the porous filler has a center particle size of 0.1 to 100 ⁇ m (preferably 1 to 50 ⁇ m).
- the content (blending amount) of the porous filler is 4 to 35% by weight (preferably 4 to 30% by weight) with respect to the total amount (100% by weight) of the antireflection material.
- the antireflection material according to any one of [12] to [12].
- the content (blending amount) of the porous filler is 5 to 80 parts by weight (preferably 5 to 70 parts by weight, more preferably, relative to the resin composition (100 parts by weight) constituting the antireflection material.
- the resin constituting the resin layer in the antireflection material comprises a composition containing at least one curable compound selected from the group consisting of epoxy resins, silicone resins, and acrylic resins.
- the amount of components volatilized during curing relative to the total amount (100% by weight) of the antireflection material before curing is 10% by weight or less (preferably 8% by weight or less, more preferably 5% by weight or less).
- the curable resin composition comprises a composition containing at least one curable compound selected from the group consisting of an epoxy resin, a silicone resin, and an acrylic resin. Wood.
- the concavo-convex arithmetic average surface roughness Ra formed on the antireflection material is in the range of 0.1 to 1.0 ⁇ m (preferably in the range of 0.2 to 0.8 ⁇ m).
- the antireflection material of the present invention Since the antireflection material of the present invention has the above-described configuration, a sufficient antireflection function can be obtained even when the amount of the porous filler is reduced, and a significant decrease in the total luminous flux of the light source can be prevented. . Therefore, by using the antireflection material of the present invention as a material for sealing the optical semiconductor element in the optical semiconductor device, a high-quality optical semiconductor device (for example, sufficient brightness while suppressing gloss) can be obtained. .
- FIG. 1 It is the schematic which shows one Embodiment of the optical semiconductor device containing the reflection preventing material of this invention.
- the left figure (a) is a perspective view
- the right figure (b) is a sectional view.
- the porous filler is dispersed in the resin layer, and the porous filler forms irregularities to suppress reflection on the surface of the resin layer, and the porous filler with respect to the total amount (100% by weight) of the antireflection material.
- the content of is 4 to 40% by weight.
- the apparent volume of the resin layer increases compared to non-porous fillers, so even a small amount of addition can be distributed throughout the resin layer, and the surface has uniform and fine irregularities. Can be formed.
- the resin layer soaks into the porous structure and the apparent difference in specific gravity between the porous filler and the resin layer is reduced, so that the dispersion state is stabilized and the interaction between the surfaces of the porous filler is suppressed. Therefore, the porous filler can spread over the entire resin layer, so that uniform and fine irregularities can be formed on the surface of the resin layer to efficiently scatter incident light.
- the addition amount (use amount) of the porous filler is small (small) means that it is small in terms of weight, and does not mean that it is small in terms of capacity (volume).
- porous filler in the antireflection material of the present invention is spread over the entire resin layer, and as a result of the stable dispersion state, the porous filler present on the surface of the resin layer forms irregularities for scattering incident light.
- the porous filler that can be used in the antireflection material of the present invention means an inorganic or organic filler that has an apparent specific gravity smaller than the true specific gravity of the filler and has a porous structure inside.
- inorganic porous filler and “organic porous filler”, respectively.
- inorganic porous filler known or conventional ones can be used, and are not particularly limited.
- inorganic glass for example, borosilicate glass, borosilicate soda glass, sodium silicate glass, aluminum silicate glass, quartz, etc.
- molded e.g., spheronized beads, etc.
- the inorganic porous filler may be a known or commonly used surface treatment for the above-mentioned inorganic porous filler [for example, a metal oxide, a silane coupling agent, a titanium coupling agent, an organic acid, a polyol, a silicone or the like. And the like that have been subjected to a surface treatment by, etc.].
- a surface treatment for example, a metal oxide, a silane coupling agent, a titanium coupling agent, an organic acid, a polyol, a silicone or the like. And the like that have been subjected to a surface treatment by, etc.
- a surface treatment for example, a metal oxide, a silane coupling agent, a titanium coupling agent, an organic acid, a polyol, a silicone or the like. And the like that have been subjected to a surface treatment by, etc.
- the inorganic porous filler porous inorganic glass or porous silica (porous silica filler) is
- the porous silica is not particularly limited, and for example, known or conventional porous silica such as fused silica, crystalline silica, high-purity synthetic silica, colloidal silica, or the like can be used.
- the porous silica is subjected to known or conventional surface treatment [for example, surface treatment with a metal oxide, silane coupling agent, titanium coupling agent, organic acid, polyol, silicone, or other surface treatment agent]. Can also be used.
- organic porous filler known or commonly used ones can be used, and are not particularly limited.
- styrene resin acrylic resin, silicone resin, acrylic-styrene resin, vinyl chloride resin, chloride chloride Vinylidene resins, amide resins, urethane resins, phenol resins, styrene-conjugated diene resins, acrylic-conjugated diene resins, olefin resins, polymers such as cellulose resins (including cross-linked products of these polymers), etc.
- organic porous fillers such as polymer porous sintered bodies, polymer foams, and gel porous bodies composed of organic substances.
- inorganic-organic porous fillers composed of the above-mentioned inorganic and organic hybrid materials can also be used.
- the porous filler may be composed of a single material, or may be composed of two or more materials.
- an inorganic porous filler is preferable from the viewpoint that the entire resin layer can be formed and irregularities can be efficiently formed on the surface thereof.
- porous silica porous Silica filler
- the shape of the porous filler is not particularly limited, and examples thereof include powder, spherical shape, crushed shape, fibrous shape, needle shape, and scale shape. Of these, spherical or crushed porous fillers are preferred from the viewpoint that the porous filler spreads over the entire resin layer and facilitates the formation of uniform and fine irregular shapes on the surface.
- the central particle diameter of the porous filler is not particularly limited, but is preferably 0.1 to 100 ⁇ m from the viewpoint that the porous filler spreads over the entire resin layer and easily forms a uniform fine uneven shape on the surface. More preferably, it is 1 to 50 ⁇ m.
- the central particle diameter means a volume particle diameter (median volume diameter) at an integrated value of 50% in a particle size distribution measured by a laser diffraction / scattering method.
- the porous structure of the porous filler can be specified by various parameters such as specific surface area, pore volume, oil absorption, etc., each of grade porous filler having parameters suitable for the antireflection material of the present invention, It can be selected without particular limitation.
- the specific surface area of the porous filler is not particularly limited, but from the viewpoint that the porous filler spreads over the entire resin layer to easily form a uniform and fine uneven shape on the surface and efficiently prevents reflection. It is preferably ⁇ 2000 m 2 / g, more preferably 100 to 1000 m 2 / g. When the specific surface area is 10 m 2 / g or more, the porous filler spreads over the entire resin layer, and the antireflection function of the surface tends to be improved.
- the specific surface area means a nitrogen adsorption specific surface area determined from a nitrogen adsorption isotherm at ⁇ 196 ° C. based on the BET equation in accordance with JIS K6430 Annex E.
- the pore volume of the porous filler is not particularly limited, but the porous filler spreads over the entire resin layer to easily form a uniform and fine uneven shape on the surface, and from the viewpoint of efficiently preventing reflection, 0.1 to 10 mL / g is preferable, and 0.2 to 5 mL / g is more preferable. If the pore volume is 0.1 mL / g or more, the porous filler tends to spread over the entire resin layer and easily form an uneven shape on the surface. On the other hand, when the pore volume is 5 mL / g or less, the mechanical strength of the porous filler tends to be improved.
- the pore volume of the porous filler can be determined by measuring the pore distribution by mercury porosimetry (porosimeter method).
- the amount of oil absorption of the porous filler is not particularly limited, but from the viewpoint that the porous filler spreads over the entire resin layer to easily form a uniform and fine uneven shape on the surface, and effectively prevents reflection. It is preferably ⁇ 2000 mL / 100 g, more preferably 100 to 1000 mL / 100 g. If the oil absorption is 10 mL / 100 g or more, the porous filler tends to spread over the entire resin layer and easily form an uneven shape on the surface. On the other hand, when the oil absorption is 2000 mL / 100 g or less, the mechanical strength of the porous filler tends to be improved.
- the oil supply amount of the porous filler is the amount of oil absorbed by 100 g of the filler, and can be measured according to JIS K5101.
- the porous filler can be used singly or in combination of two or more.
- the porous filler can also be produced by a known or conventional production method.
- Rhino Shirosphere series such as “Sphere C-1510” (made by Fuji Silysia Chemical Ltd.), trade names “Sunsphere H-31”, “Sunsphere H-32”, “Sunsphere H-33”, “Sans Sunsphere H such as “Fair H-51”, “Sunsphere H-52”, “Sunsphere H-53”, “Sunsphere H-121”, “Sunsphere H-122”, “Sunsphere H-201”
- Commercial products such as a series (above, manufactured by AGC S-Tech Co., Ltd.) can also be used.
- the content (blending amount) of the porous filler in the antireflection material of the present invention is 4 to 40% by weight, preferably 4 to 35% by weight, based on the total amount (100% by weight) of the antireflection material. Preferably, it is 4 to 30% by weight.
- the content of the porous filler is 4% by weight or more, the porous filler spreads over the entire resin layer constituting the antireflection material, and it becomes easy to form a uniform uneven shape on the entire surface.
- the content of the porous filler is 40% by weight or less, when the antireflection material of the present invention is used as, for example, a sealing material for an optical semiconductor device, it is sufficient to prevent a significant decrease in the total luminous flux. There is a tendency to ensure illuminance.
- the content (blending amount) of the porous filler in the antireflection material of the present invention is usually 5 to 80 parts by weight, preferably 5 with respect to the resin composition (100 parts by weight) constituting the antireflection material. It is ⁇ 70 parts by weight, more preferably 5 to 60 parts by weight. When the content of the porous filler is 5 parts by weight or more, the porous filler spreads over the entire resin layer constituting the antireflection material, and it becomes easy to form a uniform uneven shape on the entire surface.
- the content of the porous filler is 80 parts by weight or less
- the antireflection material of the present invention is used as, for example, a sealing material for an optical semiconductor device, it is sufficient to prevent a significant decrease in the total luminous flux. There is a tendency to ensure illuminance.
- the resin constituting the resin layer in the antireflection material of the present invention is not particularly limited, but is suitable as a sealing material for an optical semiconductor element in an optical semiconductor device, that is, a resin composition for optical semiconductor sealing.
- a sealing material for an optical semiconductor element in an optical semiconductor device that is, a resin composition for optical semiconductor sealing.
- a curable resin that gives a cured product that is also excellent in cracks and properties that do not easily peel off from the adherend can be used.
- a known or commonly used resin composition having thermosetting property or photo-curing property can be used without particular limitation.
- an epoxy resin (epoxy compound) (“epoxy resin (A)” At least one selected from the group consisting of a silicone resin (silicone compound) (referred to as “silicone resin (B)”), and an acrylic resin (acrylic compound) (referred to as “acrylic resin (C)”).
- a composition containing a seed curable compound is preferred.
- examples of such a composition include a composition containing an epoxy resin (A) (curable epoxy resin composition), a composition containing a silicone resin (B) (curable silicone resin composition), and an acrylic resin (C ) (A curable acrylic resin composition).
- the curable resin composition of this invention is not limited to the composition of the following aspects.
- the antireflection material of the present invention is not limited to the use of the resin composition for sealing an optical semiconductor, and can be applied to, for example, various optical members described later, and is a resin suitable for each use. (For example, it is applicable also to polyolefin resin, polyester resin, polyamide resin, polyurethane resin, etc.).
- a curable epoxy resin composition, a curable silicone resin composition, and a curable acrylic resin composition excellent in heat resistance, transparency, durability, and the like are preferable.
- a curable epoxy resin composition is more preferable.
- the curable epoxy resin composition (sometimes referred to as “the curable epoxy resin composition of the present invention”) is a curable composition containing the epoxy resin (A) as an essential component.
- the curable epoxy resin composition of the present invention further contains a curing agent (D) and a curing accelerator (E) or a curing catalyst (F) as essential components. That is, the curable epoxy resin composition of the present invention is a composition containing an epoxy resin (A), a curing agent (D), and a curing accelerator (E) as essential components, or an epoxy resin (A) and a curing catalyst. It is a composition containing (F) as an essential component.
- the curable epoxy resin composition of the present invention may contain other components other than the essential components described above.
- Epoxy resin (A) The epoxy resin (A) in the curable epoxy resin composition of the present invention is a compound having one or more epoxy groups (oxirane rings) in the molecule, and is arbitrarily selected from known or commonly used epoxy compounds. Can do.
- the epoxy resin (A) include an aromatic epoxy compound (aromatic epoxy resin), an aliphatic epoxy compound (aliphatic epoxy resin), an alicyclic epoxy compound (alicyclic epoxy resin), and a heterocyclic epoxy compound. (Heterocyclic epoxy resin), siloxane derivatives having one or more epoxy groups in the molecule, and the like.
- aromatic epoxy compound examples include aromatic glycidyl ether type epoxy resins [for example, bisphenol A type epoxy resins, bisphenol F type epoxy resins, biphenol type epoxy resins, novolac type epoxy resins (for example, phenol novolac type epoxy resins, Cresol novolac type epoxy resin, bisphenol A cresol novolac type epoxy resin), naphthalene type epoxy resin, epoxy resin obtained from trisphenol methane, etc.].
- aromatic glycidyl ether type epoxy resins for example, bisphenol A type epoxy resins, bisphenol F type epoxy resins, biphenol type epoxy resins, novolac type epoxy resins (for example, phenol novolac type epoxy resins, Cresol novolac type epoxy resin, bisphenol A cresol novolac type epoxy resin), naphthalene type epoxy resin, epoxy resin obtained from trisphenol methane, etc.].
- aliphatic epoxy compound examples include aliphatic glycidyl ether-based epoxy compounds [for example, aliphatic polyglycidyl ether and the like].
- the alicyclic epoxy compound is a compound having one or more alicyclic rings (aliphatic hydrocarbon rings) and one or more epoxy groups in the molecule (provided that one epoxy group is present in the molecule).
- the siloxane derivative having the above is excluded).
- the alicyclic epoxy compound include (i) at least one alicyclic epoxy group (an epoxy group composed of two adjacent carbon atoms and oxygen atoms constituting the alicyclic ring) in the molecule (preferably (Ii) a compound having an epoxy group bonded directly to the alicyclic ring with a single bond; (iii) a compound having an alicyclic ring and a glycidyl group.
- numerator has, In particular, it is a cyclohexene oxide group (adjacent which comprises a cyclohexane ring from a sclerosing
- the compound having at least one alicyclic epoxy group in the molecule is preferably a compound having two or more cyclohexene oxide groups in the molecule from the viewpoint of transparency and heat resistance of the cured product.
- a compound represented by the following formula (1) is preferable.
- X represents a single bond or a linking group (a divalent group having one or more atoms).
- the linking group include divalent hydrocarbon groups, alkenylene groups in which part or all of carbon-carbon double bonds are epoxidized, carbonyl groups, ether bonds, ester bonds, carbonate groups, amide groups, and the like. And a group in which a plurality of are connected.
- Examples of the compound in which X in the formula (1) is a single bond include 3,4,3 ′, 4′-diepoxybicyclohexane.
- Examples of the divalent hydrocarbon group include a linear or branched alkylene group having 1 to 18 carbon atoms and a divalent alicyclic hydrocarbon group.
- Examples of the linear or branched alkylene group having 1 to 18 carbon atoms include a methylene group, a methylmethylene group, a dimethylmethylene group, an ethylene group, a propylene group, and a trimethylene group.
- divalent alicyclic hydrocarbon group examples include 1,2-cyclopentylene group, 1,3-cyclopentylene group, cyclopentylidene group, 1,2-cyclohexylene group, 1,3-cyclopentylene group, And divalent cycloalkylene groups (including cycloalkylidene groups) such as cyclohexylene group, 1,4-cyclohexylene group and cyclohexylidene group.
- alkenylene group in the alkenylene group in which part or all of the carbon-carbon double bond is epoxidized include, for example, vinylene group, propenylene group, 1-butenylene group , 2-butenylene group, butadienylene group, pentenylene group, hexenylene group, heptenylene group, octenylene group, etc., and a linear or branched alkenylene group having 2 to 8 carbon atoms (including alkapolyenylene group).
- the epoxidized alkenylene group is preferably an alkenylene group in which all of the carbon-carbon double bonds are epoxidized, more preferably 2 to 4 carbon atoms in which all of the carbon-carbon double bonds are epoxidized. Alkenylene group.
- the linking group X is particularly preferably a linking group containing an oxygen atom, specifically, —CO—, —O—CO—O—, —COO—, —O—, —CONH—, epoxidation.
- Representative examples of the compound represented by the above formula (1) include 2,2-bis (3,4-epoxycyclohexane-1-yl) propane, bis (3,4-epoxycyclohexylmethyl) ether, , 2-bis (3,4-epoxycyclohexane-1-yl) ethane, 1,2-epoxy-1,2-bis (3,4-epoxycyclohexane-1-yl) ethane, the following formula (1-1) And compounds represented by (1-10).
- l and m each represents an integer of 1 to 30.
- R in the following formula (1-5) is an alkylene group having 1 to 8 carbon atoms, and is a methylene group, ethylene group, propylene group, isopropylene group, butylene group, isobutylene group, s-butylene group, pentylene group, hexylene.
- linear or branched alkylene groups such as a group, a heptylene group, and an octylene group.
- linear or branched alkylene groups having 1 to 3 carbon atoms such as a methylene group, an ethylene group, a propylene group, and an isopropylene group are preferable.
- N1 to n6 in the following formulas (1-9) and (1-10) each represents an integer of 1 to 30.
- Examples of the compound (ii) having an epoxy group bonded directly to the alicyclic ring with a single bond include compounds represented by the following formula (2).
- R ′ is a group obtained by removing p hydroxyl groups (—OH) from a p-valent alcohol (p-valent organic group) in the structural formula, and p and q each represent a natural number.
- the p-valent alcohol [R ′ (OH) p ] include polyhydric alcohols (such as alcohols having 1 to 15 carbon atoms) such as 2,2-bis (hydroxymethyl) -1-butanol.
- p is preferably 1 to 6, and q is preferably 1 to 30.
- q in each () (inside the parenthesis) may be the same or different.
- 1,2-epoxy-4- (2-oxiranyl) cyclohexane adduct of 2,2-bis (hydroxymethyl) -1-butanol for example, , Trade name “EHPE3150” (manufactured by Daicel Corporation), etc.
- Examples of the compound (iii) having an alicyclic ring and a glycidyl group include 2,2-bis [4- (2,3-epoxypropoxy) cyclohexyl] propane, 2,2-bis [3,5 -Dimethyl-4- (2,3-epoxypropoxy) cyclohexyl] propane, hydrogenated bisphenol A type epoxy resin (hydrogenated bisphenol A type epoxy resin), etc .; bis [2- (2,3-epoxy Propoxy) cyclohexyl] methane, [2- (2,3-epoxypropoxy) cyclohexyl] [4- (2,3-epoxypropoxy) cyclohexyl] methane, bis [4- (2,3-epoxy Propoxy) cyclohexyl] methane, bis [3,5-dimethyl-4- (2,3-epoxypropoxy) cyclohexyl] methane, bisphenol F type epoxy Hydrogenated resin (hydrogenated bisphenol F
- alicyclic epoxy compound examples include 1,2,8,9-diepoxy limonene.
- heterocyclic epoxy compound examples include heterocycles other than an epoxy group (oxirane ring) in the molecule [for example, tetrahydrofuran ring, tetrahydropyran ring, morpholine ring, chroman ring, isochroman ring, tetrahydrothiophene ring, tetrahydrothiopyran.
- Ring aziridine ring, pyrrolidine ring, piperidine ring, piperazine ring, indoline ring, 2,6-dioxabicyclo [3.3.0] octane ring, 1,3,5-triazacyclohexane ring, 1,3,5 -Non-aromatic heterocycles such as triazacyclohexa-2,4,6-trione ring (isocyanuric ring); Aromatic heterocycles such as thiophene ring, pyrrole ring, furan ring, pyridine ring, etc.] and epoxy And a compound having a group.
- isocyanurate having one or more epoxy groups in the molecule (hereinafter sometimes referred to as “epoxy group-containing isocyanurate”) can be preferably used.
- the number of epoxy groups in the molecule of the epoxy group-containing isocyanurate is not particularly limited, but is preferably 1 to 6, more preferably 1 to 3.
- Examples of the epoxy group-containing isocyanurate include compounds represented by the following formula (3).
- R X , R Y , and R Z are the same or different and represent a hydrogen atom or a monovalent organic group.
- at least one of R X to R Z is a monovalent organic group containing an epoxy group.
- the monovalent organic group include a monovalent aliphatic hydrocarbon group (for example, an alkyl group and an alkenyl group); a monovalent aromatic hydrocarbon group (for example, an aryl group); A cyclic group; a monovalent group formed by combining two or more of an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, and an aromatic hydrocarbon group.
- the monovalent organic group may have a substituent (for example, a substituent such as a hydroxy group, a carboxy group, or a halogen atom).
- a substituent for example, a substituent such as a hydroxy group, a carboxy group, or a halogen atom.
- the monovalent organic group containing an epoxy group include monovalent groups containing an epoxy group described later such as an epoxy group, a glycidyl group, a 2-methylepoxypropyl group, and a cyclohexene oxide group.
- the epoxy group-containing isocyanurate includes a compound represented by the following formula (3-1), a compound represented by the following formula (3-2), and a compound represented by the following formula (3-3). And the like.
- R 1 and R 2 are the same or different, A hydrogen atom or an alkyl group having 1 to 8 carbon atoms is shown.
- the alkyl group having 1 to 8 carbon atoms include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, s-butyl, pentyl, hexyl, heptyl, octyl and the like. Examples thereof include a chain or branched alkyl group.
- R 1 and R 2 are particularly preferably hydrogen atoms.
- Representative examples of the compound represented by the above formula (3-1) include monoallyl diglycidyl isocyanurate, 1-allyl-3,5-bis (2-methylepoxypropyl) isocyanurate, 1- (2 -Methylpropenyl) -3,5-diglycidyl isocyanurate, 1- (2-methylpropenyl) -3,5-bis (2-methylepoxypropyl) isocyanurate and the like.
- Representative examples of the compound represented by the above formula (3-2) include diallyl monoglycidyl isocyanurate, 1,3-diallyl-5- (2-methylepoxypropyl) isocyanurate, 1,3-bis ( 2-methylpropenyl) -5-glycidyl isocyanurate, 1,3-bis (2-methylpropenyl) -5- (2-methylepoxypropyl) isocyanurate and the like.
- Representative examples of the compound represented by the above formula (3-3) include triglycidyl isocyanurate, tris (2-methylepoxypropyl) isocyanurate, and the like.
- the epoxy group-containing isocyanurate may be modified in advance by adding a compound that reacts with an epoxy group such as alcohol or acid anhydride.
- siloxane derivative having one or more epoxy groups in the molecule (sometimes referred to as “epoxy group-containing siloxane derivative”), a siloxane skeleton composed of siloxane bonds (Si—O—Si) in the molecule is used. And a compound having at least one epoxy group.
- the siloxane skeleton include a cyclic siloxane skeleton; a linear or branched silicone (linear or branched polysiloxane), a polysiloxane skeleton such as a cage-type or ladder-type polysilsesquioxane, and the like. Can be mentioned.
- the number of epoxy groups in the molecule of the epoxy group-containing siloxane derivative is not particularly limited, but is preferably 2 to 4, more preferably 3 or 4.
- the epoxy group which the said epoxy group containing siloxane derivative has is not specifically limited, at least 1 piece is a point which can harden a curable epoxy resin composition efficiently and the hardened
- An alicyclic epoxy group is preferred, and among them, at least one of the epoxy groups is particularly preferably a cyclohexene oxide group.
- Examples of the epoxy group-containing siloxane derivative include a compound (cyclic siloxane) represented by the following formula (4).
- R ⁇ 3 > is the same or different and shows the monovalent
- at least one (preferably at least two) of R 3 in the compound represented by the formula (4) is a monovalent organic group containing an epoxy group (in particular, 1 containing an alicyclic epoxy group). Valent organic group).
- p represents an integer of 3 or more (preferably an integer of 3 to 6).
- the plurality of R 3 may be the same or different.
- Examples of the monovalent organic group containing the epoxy group include an epoxy group, a glycidyl group, a methylglycidyl group, and a group represented by —A—R 4
- A represents an alkylene group
- R 4 represents an alicyclic epoxy group. Indicates a group.
- Examples of A (alkylene group) include linear or branched alkylene groups having 1 to 18 carbon atoms such as a methylene group, a methylmethylene group, a dimethylmethylene group, an ethylene group, a propylene group, and a trimethylene group. It is done.
- Examples of R 4 include a cyclohexene oxide group.
- examples of the epoxy group-containing siloxane derivative include 2,4-di [2- (3- ⁇ oxabicyclo [4.1.0] heptyl ⁇ ) ethyl] -2,4,6, 6,8,8-Hexamethyl-cyclotetrasiloxane, 4,8-di [2- (3- ⁇ oxabicyclo [4.1.0] heptyl ⁇ ) ethyl] -2,2,4,6,6,8 -Hexamethyl-cyclotetrasiloxane, 2,4-di [2- (3- ⁇ oxabicyclo [4.1.0] heptyl ⁇ ) ethyl] -6,8-dipropyl-2,4,6,8-tetramethyl -Cyclotetrasiloxane, 4,8-di [2- (3- ⁇ oxabicyclo [4.1.0] heptyl ⁇ ) ethyl] -2,6-dipropyl-2,4,6,8-tetramethyl-cyclo Tet
- epoxy group-containing siloxane derivative examples include compounds represented by the following formula (5) (chain polysiloxane).
- R 5 and R 6 are the same or different and are a monovalent organic group containing an epoxy group, an alkoxy group (for example, an alkoxy group having 1 to 4 carbon atoms such as a methoxy group or an ethoxy group) Etc.), an alkyl group (eg, an alkyl group having 1 to 4 carbon atoms such as a methyl group or an ethyl group), or an aryl group (eg, an aryl group having 6 to 12 carbon atoms such as a phenyl group or a naphthyl group).
- an alkoxy group for example, an alkoxy group having 1 to 4 carbon atoms such as a methoxy group or an ethoxy group
- an alkyl group eg, an alkyl group having 1 to 4 carbon atoms such as a methyl group or an ethyl group
- an aryl group eg, an aryl group having 6 to 12 carbon atoms such as a pheny
- At least one (preferably at least two) of R 5 and R 6 in the compound represented by the formula (5) is a monovalent organic group containing an epoxy group.
- the monovalent organic group containing an epoxy group include the same groups as those in the above formula (4).
- q in the formula (5) represents an integer of 1 or more (for example, an integer of 1 to 500).
- the structures in parentheses marked with q may be the same or different.
- the additional form is not particularly limited, and may be a random type or a block type.
- epoxy group-containing siloxane derivative examples include, for example, a silicone resin having an epoxy group (for example, an alicyclic epoxy group-containing silicone resin described in JP-A-2008-248169), and a silsesquioxy having an epoxy group.
- Sun for example, an organopolysilsesquioxane resin having at least two epoxy functional groups in one molecule described in JP-A-2008-19422) and the like.
- the epoxy resin (A) bisphenol A type epoxy resin, isocyanurate having one or more epoxy groups in the molecule
- a novolak type epoxy resin, an alicyclic epoxy compound, an aliphatic epoxy compound, and a siloxane derivative having one or more epoxy groups in the molecule are preferable.
- the curable epoxy resin composition of the present invention is an epoxy resin (A) and an alicyclic epoxy compound as an essential component in that a cured product excellent in transparency and durability can be obtained with high productivity. It is preferable to include.
- the alicyclic epoxy compound is particularly preferably a compound having a cyclohexene oxide group in the molecule (particularly a compound having two or more cyclohexene oxide groups in the molecule), more preferably represented by the formula (1). (Especially a compound represented by formula (1-1)).
- the epoxy resin (A) can be used alone or in combination of two or more.
- an epoxy resin (A) can also be manufactured by a well-known thru
- the content (blending amount) of the epoxy resin (A) in the curable epoxy resin composition of the present invention is not particularly limited, but is 25 to 99.99 with respect to the total amount (100% by weight) of the curable epoxy resin composition. It is preferably 8% by weight (for example, 25 to 95% by weight), more preferably 30 to 90% by weight, still more preferably 35 to 85% by weight, and particularly preferably 40 to 60% by weight.
- the content of the epoxy resin (A) is not particularly limited, but is 25 to 99.99 with respect to the total amount (100% by weight) of the curable epoxy resin composition. It is preferably 8% by weight (for example, 25 to 95% by weight), more preferably 30 to 90% by weight, still more preferably 35 to 85% by weight, and particularly preferably 40 to 60% by weight.
- the content of the epoxy resin (A) is 99.8% by weight or less, the strength of the cured product tends to be further improved.
- the content (blending amount) of the alicyclic epoxy compound in the curable epoxy resin composition of the present invention is not particularly limited, but is 20 to 99.99% with respect to the total amount (100% by weight) of the curable epoxy resin composition. 8% by weight is preferable, more preferably 40 to 95% by weight (for example, 40 to 60% by weight), still more preferably 50 to 95% by weight, particularly preferably 60 to 90% by weight, and most preferably 70 to 85% by weight. It is.
- the content of the alicyclic epoxy compound is 20% by weight or more, curing can proceed more efficiently, and the transparency and durability of the cured product tend to be further improved.
- the content of the alicyclic epoxy compound is 99.8% by weight or less, the strength of the cured product tends to be further improved.
- the ratio of the alicyclic epoxy compound to the total amount of the epoxy compound contained in the curable epoxy resin composition of the present invention (total epoxy compound; for example, total amount of epoxy resin (A)) (100% by weight) is not particularly limited. 40 to 100% by weight (for example, 40 to 90% by weight), more preferably 80 to 100% by weight, still more preferably 90 to 100% by weight, and particularly preferably 95 to 100% by weight.
- the curing agent (D) which is one of the essential components of the curable epoxy resin composition of the present invention is a compound having a function of curing the curable epoxy resin composition by reacting with the epoxy compound.
- the curing agent (D) is not particularly limited, and those well known and commonly used as curing agents for epoxy resins can be used. For example, acid anhydrides (acid anhydride-based curing agents), amines (amine-based) Curing agents), polyamide resins, imidazoles (imidazole curing agents), polymercaptans (polymercaptan curing agents), phenols (phenol curing agents), polycarboxylic acids, dicyandiamides, organic acid hydrazides, and the like. .
- acid anhydrides as the curing agent (D)
- known or commonly used acid anhydride curing agents can be used, and are not particularly limited.
- methyltetrahydrophthalic anhydride (4 -Methyltetrahydrophthalic anhydride, 3-methyltetrahydrophthalic anhydride, etc.
- methylhexahydrophthalic anhydride such as 4-methylhexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride
- dodecenyl succinic anhydride methyl Endomethylenetetrahydrophthalic anhydride, phthalic anhydride, maleic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylcyclohexene dicarboxylic anhydride, pyromellitic anhydride, trimellitic anhydride, benzophenonetetracarboxylic anhydride, anhydrous Nadic
- acid anhydrides for example, methyltetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, dodecenyl succinic anhydride, methylendomethylenetetrahydrophthalic anhydride, etc.
- a solid acid anhydride at 25 ° C. for example, by dissolving in a liquid acid anhydride at 25 ° C. to form a liquid mixture, the curing agent (D in the curable epoxy resin composition of the present invention (D ) Tends to be improved.
- saturated monocyclic hydrocarbon dicarboxylic acid anhydrides (including those in which a substituent such as an alkyl group is bonded to the ring) are preferable from the viewpoint of heat resistance and transparency of the cured product.
- amines (amine-based curing agent) as the curing agent (D) a known or conventional amine-based curing agent can be used, and is not particularly limited.
- ethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine Aliphatic polyamines such as dipropylenediamine, diethylaminopropylamine, polypropylenetriamine; mensendiamine, isophoronediamine, bis (4-amino-3-methyldicyclohexyl) methane, diaminodicyclohexylmethane, bis (aminomethyl) cyclohexane, N-amino Cycloaliphatic polyamines such as ethylpiperazine, 3,9-bis (3-aminopropyl) -3,4,8,10-tetraoxaspiro [5,5] undecane; m-phenylenediamine, p-phenylenediamine, Len-2
- phenols phenolic curing agents
- known or conventional phenolic curing agents can be used, and are not particularly limited.
- novolac type phenol resins novolac type cresol resins
- paraxylylene-modified phenols examples thereof include aralkyl resins such as resins, paraxylylene / metaxylylene-modified phenol resins, terpene-modified phenol resins, dicyclopentadiene-modified phenol resins, and triphenol propane.
- Examples of the polyamide resin as the curing agent (D) include a polyamide resin having one or both of a primary amino group and a secondary amino group in the molecule.
- imidazole (imidazole curing agent) as the curing agent (D), a known or conventional imidazole curing agent can be used, and is not particularly limited.
- Examples of the polymercaptans (polymercaptan-based curing agent) as the curing agent (D) include liquid polymercaptan and polysulfide resin.
- polycarboxylic acids examples include adipic acid, sebacic acid, terephthalic acid, trimellitic acid, carboxy group-containing polyester, and the like.
- acid anhydrides are preferable from the viewpoints of curability, heat resistance of the cured product, and transparency.
- curing agent (D) can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- a commercial item can also be used as a hardening
- commercially available acid anhydrides include trade names “Licacid MH-700” and “Licacid MH-700F” (manufactured by Shin Nippon Rika Co., Ltd.); trade name “HN-5500” (Hitachi Chemical Industries). Etc.).
- the content (blending amount) of the curing agent (D) in the curable epoxy resin composition of the present invention is not particularly limited, but the total amount of the epoxy compound contained in the curable epoxy resin composition (total epoxy compound; for example, epoxy
- the total amount of the resin (A) is preferably 50 to 200 parts by weight, more preferably 75 to 150 parts by weight, and still more preferably 100 to 120 parts by weight with respect to 100 parts by weight. More specifically, when acid anhydrides are used as the curing agent (D), 0.5 to 1. per epoxy group equivalent in all epoxy compounds contained in the curable epoxy resin composition of the present invention. It is preferable to use it at a ratio of 5 equivalents.
- the curing accelerator (E) which is one of the essential components of the curable epoxy resin composition of the present invention, has a reaction rate of the reaction of the epoxy compound (particularly the reaction between the epoxy resin (A) and the curing agent (D)). It is a compound having a function to promote.
- the curing accelerator (E) those well known and commonly used as curing accelerators for epoxy resins can be used, and are not particularly limited.
- DBU 1,8-diazabicyclo [5.4.0] undecene-7
- salts thereof eg, phenol salts, octylates, p-toluenesulfonates, formates, tetraphenylborate salts, etc.
- salts thereof eg, phenol salt, octylate, p-toluenesulfonate, formate, tetraphenylborate salt
- one type of curing accelerator (E) can be used alone, or two or more types can be used in combination.
- Examples of the curing accelerator (E) in the curable epoxy resin composition of the present invention include, for example, trade names “U-CAT SA 506”, “U-CAT SA 102”, “U-CAT 5003”, “U-CAT”. 18X ",” 12XD "(developed product) (San Apro Co., Ltd.); trade names" TPP-K “,” TPP-MK “(Hokuko Chemical Co., Ltd.); trade names” PX- Commercially available products such as “4ET” (manufactured by Nippon Chemical Industry Co., Ltd.) can be used.
- the content (blending amount) of the curing accelerator (E) in the curable epoxy resin composition of the present invention is not particularly limited, but the total amount of the epoxy compound contained in the curable epoxy resin composition (total epoxy compound; for example, The total amount of the epoxy resin (A)) is preferably 0.05 to 5 parts by weight, more preferably 0.1 to 3 parts by weight, still more preferably 0.2 to 3 parts by weight, particularly preferably 100 parts by weight. 0.25 to 2.5 parts by weight.
- the content of the curing accelerator (E) is preferably 0.05 to 5 parts by weight, more preferably 0.1 to 3 parts by weight, still more preferably 0.2 to 3 parts by weight, particularly preferably 100 parts by weight. 0.25 to 2.5 parts by weight.
- the curing catalyst (F) which is one of the essential components of the curable epoxy resin composition of the present invention, is curable by initiating and / or accelerating the curing reaction (polymerization reaction) of a cationically polymerizable compound such as an epoxy compound. It is a compound having a function of curing the epoxy resin composition.
- a curing catalyst (F) for example, the cationic polymerization initiator (thermal cation polymerization initiator) which generate
- examples of the curing catalyst (F) include aryldiazonium salts, aryliodonium salts, arylsulfonium salts, allene-ion complexes, etc., and trade names “PP-33”, “CP-66”, “CP-77” (manufactured by ADEKA); trade name “FC-509” (manufactured by 3M); trade name “UVE1014” (manufactured by GE); trade names “Sun Aid SI-60L”, “Sun Aid” "SI-80L”, “Sun-Aid SI-100L”, “Sun-Aid SI-110L”, “Sun-Aid SI-150L” (manufactured by Sanshin Chemical Industry Co., Ltd.); trade name “CG-24-61” (BASF Corporation) (Commercially available products) can be preferably used.
- the curing catalyst (F) for example, a compound of a chelate compound of a metal such as aluminum or titanium and acetoacetic acid or a diketone and a silanol such as triphenylsilanol, or a metal such as aluminum or titanium and acetoacetic acid
- a compound of a chelate compound with a diketone and a phenol such as bisphenol S is also included.
- Lewis acid / amine complex as the curing catalyst (F), a known or commonly used Lewis acid / amine complex-based curing catalyst can be used, and is not particularly limited.
- a known or commonly used Lewis acid / amine complex-based curing catalyst can be used, and is not particularly limited.
- Bronsted acid salts as the curing catalyst (F), known or commonly used Bronsted acid salts can be used, and are not particularly limited.
- imidazole as the curing catalyst (F), known or conventional imidazoles can be used, and are not particularly limited.
- one type of curing catalyst (F) can be used alone, or two or more types can be used in combination.
- a curing catalyst (F) a commercial item can be used, for example.
- the content (blending amount) of the curing catalyst (F) in the curable epoxy resin composition of the present invention is not particularly limited, but the total amount of the epoxy compound contained in the curable epoxy resin composition (total epoxy compound; for example, epoxy
- the total amount of the resin (A)) is preferably 0.01 to 15 parts by weight, more preferably 0.01 to 12 parts by weight, still more preferably 0.05 to 10 parts by weight, and particularly preferably 0 to 100 parts by weight. .05 to 8 parts by weight.
- the curable epoxy resin composition of the present invention may substantially contain a photocationic polymerization initiator that generates a cationic polymerization initiating species (such as an acid) by light irradiation.
- a photocationic polymerization initiator that generates a cationic polymerization initiating species (such as an acid) by light irradiation.
- the content thereof is, for example, the total amount of epoxy compounds contained in the curable epoxy resin composition (total epoxy compounds; for example, epoxy resin (A )) To 100 parts by weight, for example, about 0.01 to 20 parts by weight, preferably 0.1 to 10 parts by weight.
- the curable epoxy resin composition of the present invention may contain a polyhydric alcohol.
- the curable epoxy resin composition of the present invention includes a curing agent (D) and a curing accelerator (E), it further includes a polyhydric alcohol in that curing can proceed more efficiently. It is preferable.
- the polyhydric alcohol known or commonly used polyhydric alcohols can be used, and are not particularly limited.
- ethylene glycol, propylene glycol, butylene glycol, 1,3-butanediol, 1,4-butanediol examples include 1,6-hexanediol, diethylene glycol, triethylene glycol, neopentyl glycol, polyethylene glycol, polypropylene glycol, polybutylene glycol, trimethylolpropane, glycerin, pentaerythritol, and dipentaerythritol.
- the polyhydric alcohol is preferably an alkylene glycol having 1 to 6 carbon atoms, more preferably carbon in terms of being able to control curing well and easily obtaining a cured product that is less prone to cracking and peeling. It is an alkylene glycol of formula 2-4.
- the polyhydric alcohol can be used alone or in combination of two or more.
- the content (blending amount) of the polyhydric alcohol in the curable epoxy resin composition of the present invention is not particularly limited, but the total amount of the epoxy compound contained in the curable epoxy resin composition (total epoxy compound; for example, epoxy resin (The total amount of A) is preferably 0.05 to 5 parts by weight, more preferably 0.1 to 3 parts by weight, still more preferably 0.2 to 3 parts by weight, particularly preferably 0.25 to 100 parts by weight. ⁇ 2.5 parts by weight.
- the content of the polyhydric alcohol is preferably 0.05 to 5 parts by weight, more preferably 0.1 to 3 parts by weight, still more preferably 0.2 to 3 parts by weight, particularly preferably 0.25 to 100 parts by weight. ⁇ 2.5 parts by weight.
- the curable epoxy resin composition of the present invention may contain a phosphor.
- a phosphor When the curable epoxy resin composition of the present invention contains a phosphor, it is particularly preferably used as an optical semiconductor device sealing application (sealing material application) in an optical semiconductor device, that is, an optical semiconductor sealing resin composition. it can.
- the phosphor a known or commonly used phosphor (in particular, a phosphor used for sealing an optical semiconductor element) can be used, and is not particularly limited.
- the general formula A 3 B 5 O 12 M [Wherein, A represents one or more elements selected from the group consisting of Y, Gd, Tb, La, Lu, Se, and Sm, and B is selected from the group consisting of Al, Ga, and In.
- YAG phosphor fine particles represented by the following formula: M represents one or more elements selected from the group consisting of Ce, Pr, Eu, Cr, Nd, and Er] (For example, Y 3 Al 5 O 12 : Ce phosphor fine particles, (Y, Gd, Tb) 3 (Al, Ga) 5 O 12 : Ce phosphor fine particles, etc.), silicate type phosphor fine particles (for example, (Sr, Ca, Ba) 2 SiO 4 : Eu and the like.
- the surface of the phosphor may be modified with an organic group (for example, a long-chain alkyl group, a phosphate group, etc.) to improve dispersibility, for example.
- the phosphor may be used alone or in combination of two or more.
- a commercial item can be used as a fluorescent substance.
- the phosphor content (blending amount) in the curable epoxy resin composition of the present invention is not particularly limited, and is 0.5 to 20% by weight relative to the total amount (100% by weight) of the curable epoxy resin composition. It can select suitably in the range of.
- the curable epoxy resin composition of the present invention may contain other components other than those described above within a range that does not adversely affect the curability and transparency.
- the other components include a silicone resin having a linear or branched chain, a silicone resin having an alicyclic ring, a silicone resin having an aromatic ring, a cage type / ladder type / random type silsesquioxane, Examples thereof include silane coupling agents such as ⁇ -glycidoxypropyltrimethoxysilane, silicone-based and fluorine-based antifoaming agents, and the like.
- the content (blending amount) of the other components is not particularly limited, but is preferably 5% by weight or less (for example, 0 to 3% by weight) with respect to the total amount (100% by weight) of the curable epoxy resin composition. .
- the curable epoxy resin composition of the present invention is not particularly limited, and can be prepared, for example, by stirring and mixing each of the above-described components in a heated state as necessary.
- the curable epoxy resin composition of the present invention may be a one-component composition that uses a mixture of all the components in advance, or, for example, a component divided into two or more. It may be a multi-liquid composition (for example, a two-liquid system) used by mixing at a predetermined ratio immediately before use.
- the method of stirring and mixing is not particularly limited, and for example, known or conventional stirring and mixing means such as various mixers such as a dissolver and a homogenizer, a kneader, a roll, a bead mill and a self-revolving stirrer can be used. Further, after stirring and mixing, defoaming may be performed under reduced pressure or under vacuum.
- the curable silicone resin composition (sometimes referred to as “the curable silicone resin composition of the present invention”) is a curable composition containing a silicone resin (B) as an essential component as a curable compound. It is a thing.
- the curable silicone resin composition of the present invention may contain components other than the silicone resin (B).
- silicone resin (B) examples include —Si—O—Si— (siloxane bond) as a main chain, and —Si—R A —Si— (silalkylene bond: R A represents an alkylene group). Included polyorganosiloxysilalkylene; curable polysiloxanes such as polyorganosiloxane that does not contain the above-mentioned silalkylene bond as the main chain.
- the silicone resin (B) a known or commonly used curable silicone resin (curable polysiloxane) can be used as the curable compound, and is not particularly limited.
- the curable silicone resin composition of the present invention contains the former, it can be used as an addition reaction curable silicone resin composition, and when it contains the latter, it can be used as a condensation reaction curable silicone resin composition. it can.
- the addition reaction curable silicone resin composition and the condensation reaction curable silicone resin composition will be described.
- the curable silicone resin composition of the present invention is not limited thereto.
- an addition type silicone resin and It may be a silicone resin composition that contains both condensation type silicone resins and cures by addition reaction and condensation reaction. That is, curing of the curable silicone resin composition in the curing step may proceed by at least one reaction selected from the group consisting of an addition reaction and a condensation reaction.
- the addition reaction curable silicone resin composition contains, for example, a polysiloxane (B1) having two or more alkenyl groups in the molecule as the silicone resin (B), and further required.
- a curable silicone resin composition containing polysiloxane having one or more (preferably two or more) hydrosilyl groups in the molecule, a metal curing catalyst, or the like may be mentioned.
- the polysiloxane (B1) is classified into a polyorganosiloxane (B1-1) and a polyorganosiloxysilalkylene (B1-2).
- polyorganosiloxysilalkylene (B1-2) has two or more alkenyl groups in the molecule, and in addition to —Si—O—Si— (siloxane bond) as a main chain, —Si Polysiloxane containing —R A —Si— (silalkylene bond: R A represents an alkylene group).
- the polyorganosiloxane (B1-1) in the present specification is a polysiloxane having two or more alkenyl groups in the molecule and not containing the silalkylene bond as a main chain.
- Examples of the polyorganosiloxane (B1-1) include those having a molecular structure of linear or branched (linear, partially branched, network, etc. having a partial branch).
- the polyorganosiloxane (B1-1) can be used alone or in combination of two or more. Two or more polyorganosiloxanes (B1-1) having different molecular structures can be used in combination, for example, linear polyorganosiloxane (B1-1) and branched polyorganosiloxane (B1-). 1) can be used in combination.
- alkenyl group that the polyorganosiloxane (B1-1) has in the molecule examples include substituted or unsubstituted alkenyl groups such as vinyl group, allyl group, butenyl group, pentenyl group, and hexenyl group.
- substituent examples include a halogen atom, a hydroxy group, and a carboxy group.
- alkenyl group a vinyl group is preferable.
- the polyorganosiloxane (B1-1) may have only one alkenyl group or may have two or more alkenyl groups.
- the alkenyl group of the polyorganosiloxane (B1-1) is not particularly limited, but is preferably bonded to a silicon atom.
- the group bonded to the silicon atom other than the alkenyl group of the polyorganosiloxane (B1-1) is not particularly limited, and examples thereof include a hydrogen atom and a monovalent organic group.
- the monovalent organic group include alkyl groups [eg, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, etc.], cycloalkyl groups [eg, cyclopropyl group, cyclobutyl group, cyclopentyl group, etc.
- the “group bonded to a silicon atom” usually means a group not containing a silicon atom.
- the group bonded to the silicon atom may have a hydroxy group or an alkoxy group.
- the properties of the polyorganosiloxane (B1-1) are not particularly limited, and may be liquid or solid.
- R 7 is the same or different and is a monovalent substituted or unsubstituted hydrocarbon group, and the specific examples described above (for example, alkyl group, alkenyl group, aryl group, aralkyl group, halogenated carbonization) Hydrogen group, etc.).
- a part of R 7 is an alkenyl group (particularly a vinyl group), and the ratio thereof is controlled within a range of 2 or more in the molecule.
- the ratio of the alkenyl group to the total amount of R 7 (100 mol%) is preferably 0.1 to 40 mol%.
- R 7 other than the alkenyl group an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- Z is a hydrogen atom or an alkyl group.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- a1 is 0 or positive number
- a2 is 0 or positive number
- a3 is 0 or positive number
- a4 is 0 or positive number
- a5 is 0 or positive number
- (a1 + a2 + a3) is positive Is a number.
- the polyorganosiloxysilalkylene (B1-2) is a polyorganosiloxane having two or more alkenyl groups in the molecule and containing a silalkylene bond as a main chain in addition to a siloxane bond.
- the alkylene group in the silalkylene bond is preferably a C 2-4 alkylene group (particularly an ethylene group).
- the polyorganosiloxysilalkylene (B1-2) is less likely to form a low molecular weight ring in the production process than the polyorganosiloxane (B1-1), and decomposes by heating or the like to produce silanol groups (—SiOH).
- the surface tackiness (tackiness) of the cured product of the curable silicone resin composition tends to be low, and it tends to be more difficult to yellow.
- polyorganosiloxysilalkylene (B1-2) examples include those having a molecular structure such as a straight chain or a branched chain (a linear chain having a partial branch, a branched chain, a network, etc.).
- Polyorganosiloxysilalkylene (B1-2) can be used alone or in combination of two or more.
- two or more types of polyorganosiloxysilalkylene (B1-2) having different molecular structures can be used in combination, for example, a linear polyorganosiloxysilalkylene (B1-2) and a branched polyorganoorgano Siloxysilalkylene (B1-2) can also be used in combination.
- alkenyl group that polyorganosiloxysilalkylene (B1-2) has in the molecule include the specific examples described above, and among them, a vinyl group is preferable. Further, the polyorganosiloxysilalkylene (B1-2) may have only one alkenyl group, or may have two or more alkenyl groups.
- the alkenyl group of polyorganosiloxysilalkylene (B1-2) is not particularly limited, but is preferably bonded to a silicon atom.
- the group bonded to the silicon atom other than the alkenyl group of polyorganosiloxysilalkylene (B1-2) is not particularly limited, and examples thereof include a hydrogen atom and a monovalent organic group.
- a monovalent organic group the above-mentioned monovalent substituted or unsubstituted hydrocarbon group etc. are mentioned, for example.
- an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- the group bonded to the silicon atom may have a hydroxy group or an alkoxy group.
- the properties of the polyorganosiloxysilalkylene (B1-2) are not particularly limited, and may be liquid or solid.
- polyorganosiloxysilalkylene (B1-2) As polyorganosiloxysilalkylene (B1-2), the following average unit formula: (R 8 2 SiO 2/2 ) b 1 (R 8 3 SiO 1/2 ) b 2 (R 8 SiO 3/2 ) b 3 (SiO 4/2 ) b 4 (R A ) b 5 (ZO 1/2 ) b 6
- R 8 is the same or different and is a monovalent substituted or unsubstituted hydrocarbon group, and the above specific examples (for example, alkyl group, alkenyl group, aryl group, aralkyl group, alkyl halide) Group).
- a part of R 8 is an alkenyl group (particularly a vinyl group), and the ratio thereof is controlled within a range of 2 or more in the molecule.
- the ratio of the alkenyl group to the total amount of R 8 (100 mol%) is preferably 0.1 to 40 mol%.
- R 8 other than an alkenyl group is preferably an alkyl group (particularly a methyl group) or an aryl group (particularly a phenyl group).
- R A is an alkylene group as described above.
- An ethylene group is particularly preferable.
- Z is a hydrogen atom or an alkyl group as described above.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- b1 is a positive number
- b2 is a positive number
- b3 is 0 or a positive number
- b4 is 0 or a positive number
- b5 is a positive number
- b6 is 0 or a positive number.
- b1 is preferably 1 to 200
- b2 is preferably 1 to 200
- b3 is preferably 0 to 10
- b4 is preferably 0 to 5
- b5 is preferably 1 to 100.
- (b3 + b4) is a positive number, the mechanical strength of the cured product tends to be further improved.
- the addition reaction curable silicone resin composition further comprises a polysiloxane having one or more (preferably two or more) hydrosilyl groups (Si—H) in the molecule (“hydrosilyl group-containing polysiloxane”). May be included).
- the hydrosilyl group-containing polysiloxane is classified into a hydrosilyl group-containing polyorganosiloxane and a hydrosilyl group-containing polyorganosiloxysil alkylene.
- the hydrosilyl group-containing polyorganosiloxysilalkylene has one or more hydrosilyl groups in the molecule, and in addition to —Si—O—Si— (siloxane bond) as a main chain, —Si—R A polysiloxane containing A-Si- (silalkylene bond: R A represents an alkylene group).
- R A represents an alkylene group
- the hydrosilyl group containing polyorganosiloxane in this specification is a polysiloxane which has 1 or more hydrosilyl groups in a molecule
- R A (alkylene group) as described above, for example, a linear or branched C 1-12 alkylene group may be mentioned, and preferably a linear or branched C 2-4 alkylene group ( In particular, ethylene group).
- hydrosilyl group-containing polyorganosiloxane examples include those having a molecular structure of a straight chain or a branched chain (a linear chain having a partial branch, a branched chain, a network, etc.).
- the said hydrosilyl group containing polyorganosiloxane can also be used individually by 1 type, and can also be used in combination of 2 or more type. Two or more hydrosilyl group-containing polyorganosiloxanes having different molecular structures can be used in combination.
- a linear hydrosilyl group-containing polyorganosiloxane and a branched hydrosilyl group-containing polyorganosiloxane may be used in combination. it can.
- groups other than hydrogen atoms are not particularly limited.
- the monovalent substituted or unsubstituted hydrocarbon group described above more specifically, an alkyl group , Aryl group, aralkyl group, halogenated hydrocarbon group and the like.
- an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- the said hydrosilyl group containing polyorganosiloxane may have an alkenyl group (for example, vinyl group) as a group couple
- the properties of the hydrosilyl group-containing polyorganosiloxane are not particularly limited, and may be liquid or solid. In particular, it is preferably a liquid, and more preferably a liquid having a viscosity at 25 ° C. of 0.1 to 1,000,000 mPa ⁇ s.
- the hydrosilyl group-containing polyorganosiloxane has the following average unit formula: (R 9 SiO 3/2 ) c 1 (R 9 2 SiO 2/2 ) c 2 (R 9 3 SiO 1/2 ) c 3 (SiO 4/2 ) c 4 (ZO 1/2 ) c 5
- R 9 is the same or different and is a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group, and a hydrogen atom, the above-mentioned specific examples (for example, alkyl group, alkenyl group, aryl Group, aralkyl group, halogenated alkyl group and the like).
- a part of R 9 is a hydrogen atom (hydrogen atom constituting a hydrosilyl group), and the ratio thereof is controlled in a range in which one or more (preferably two or more) hydrosilyl groups are present in the molecule.
- the ratio of hydrogen atoms to the total amount of R 9 (100 mol%) is preferably 0.1 to 40 mol%.
- R 9 other than a hydrogen atom is preferably an alkyl group (particularly a methyl group) or an aryl group (particularly a phenyl group).
- Z is a hydrogen atom or an alkyl group as described above.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- c1 is 0 or positive
- c2 is 0 or positive
- c3 is 0 or positive
- c4 is 0 or positive
- c5 is 0 or positive
- (c1 + c2 + c3) is positive Is a number.
- the hydrosilyl group-containing polyorganosiloxysilalkylene is a polyorganosiloxane having one or more hydrosilyl groups in the molecule and containing a silalkylene bond as a main chain in addition to a siloxane bond.
- the alkylene group in the silalkylene bond is preferably, for example, a C 2-4 alkylene group (particularly an ethylene group).
- the hydrosilyl group-containing polyorganosiloxysilalkylene is less likely to produce a low molecular weight ring in the production process than the hydrosilyl group-containing polyorganosiloxane, and is not easily decomposed by heating or the like to produce a silanol group (—SiOH). Therefore, when the above hydrosilyl group-containing polyorganosiloxysilalkylene is used, the surface tackiness of the cured product of the curable silicone resin composition tends to be low, and it tends to be more difficult to yellow.
- hydrosilyl group-containing polyorganosiloxysil alkylene examples include those having a molecular structure of linear or branched (linear, partially branched, network, etc. having a partial branch).
- the said hydrosilyl group containing polyorganosiloxy silalkylene can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- Two or more hydrosilyl group-containing polyorganosiloxysil alkylenes having different molecular structures can be used in combination, for example, a linear hydrosilyl group-containing polyorganosiloxysil alkylene and a branched hydrosilyl group-containing polyorganosiloxysil alkylene. Can also be used in combination.
- the group bonded to the silicon atom other than the hydrogen atom of the hydrosilyl group-containing polyorganosiloxysilalkylene is not particularly limited, and examples thereof include a monovalent organic group.
- a monovalent organic group the above-mentioned monovalent substituted or unsubstituted hydrocarbon group etc. are mentioned, for example. Of these, an alkyl group (particularly a methyl group) and an aryl group (particularly a phenyl group) are preferable.
- the properties of the hydrosilyl group-containing polyorganosiloxysilalkylene are not particularly limited, and may be liquid or solid.
- hydrosilyl group-containing polyorganosiloxysilalkylene examples include the following average unit formula: (R 10 2 SiO 2/2) d1 (R 10 3 SiO 1/2) d2 (R 10 SiO 3/2) d3 (SiO 4/2) d4 (R A) d5 (ZO 1/2) d6
- R 10 2 SiO 2/2) d1 R 10 3 SiO 1/2
- d2 R 10 SiO 3/2)
- SiO 4/2 d4
- R A d5 (ZO 1/2) d6
- a polyorganosiloxysilalkylene represented by the formula is preferred.
- R 10 is the same or different and is a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon group, and the hydrogen atom and the above-described specific examples (for example, an alkyl group, an alkenyl group, an aryl group) Aralkyl group, halogenated alkyl group, etc.).
- a part of R 10 is a hydrogen atom, and the ratio thereof is controlled within a range of 1 or more (preferably 2 or more) in the molecule.
- the proportion of hydrogen atoms with respect to the total amount of R 10 (100 mol%) is preferably 0.1 to 50 mol%, more preferably 5 to 35 mol%.
- R 10 other than a hydrogen atom is preferably an alkyl group (particularly a methyl group) or an aryl group (particularly a phenyl group).
- the ratio of aryl groups (particularly phenyl groups) to the total amount (100 mol%) of R 10 is preferably 5 mol% or more (eg, 5 to 80 mol%), more preferably 10 mol% or more.
- R A is an alkylene group as described above.
- An ethylene group is particularly preferable.
- Z is a hydrogen atom or an alkyl group as described above.
- alkyl group examples include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, and a hexyl group, and a methyl group is particularly preferable.
- d1 is a positive number
- d2 is a positive number
- d3 is 0 or a positive number
- d4 is 0 or a positive number
- d5 is a positive number
- d6 is 0 or a positive number.
- d1 is preferably 1 to 50
- d2 is preferably 1 to 50
- d3 is preferably 0 to 10
- d4 is preferably 0 to 5
- d5 is preferably 1 to 30.
- hydrosilyl group-containing polysiloxane in the addition reaction curable silicone resin composition only the hydrosilyl group-containing polyorganosiloxane can be used, or only the hydrosilyl group-containing polyorganosiloxysil alkylene can be used, Moreover, hydrosilyl group-containing polyorganosiloxane and hydrosilyl group-containing polyorganosiloxysilalkylene can be used in combination. When the hydrosilyl group-containing polyorganosiloxane and the hydrosilyl group-containing polyorganosiloxysilalkylene are used in combination, these ratios are not particularly limited and can be set as appropriate.
- the addition reaction curable silicone resin composition is not particularly limited, but is a composition (formulation composition) in which the alkenyl group is 0.2 to 4 moles with respect to 1 mole of the hydrosilyl group present in the curable resin composition. ), More preferably 0.5 to 1.5 mol, still more preferably 0.8 to 1.2 mol.
- the cured product has more heat resistance, transparency, thermal shock resistance, reflow resistance, and barrier property against corrosive gas (for example, SOx gas). There is a tendency to improve.
- the addition reaction curable silicone resin composition may contain a metal curing catalyst as described above.
- metal curing catalysts include well-known hydrosilylation catalysts such as platinum-based catalysts, rhodium-based catalysts, and palladium-based catalysts.
- a platinum vinylmethylsiloxane complex a platinum-carbonylvinylmethyl complex, or a complex of chloroplatinic acid and an alcohol or aldehyde is preferable because the reaction rate is good.
- a metal curing catalyst (hydrosilylation catalyst) can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- the content (blending amount) of the metal curing catalyst (hydrosilylation catalyst) in the addition reaction curable silicone resin composition is not particularly limited, but the total amount of alkenyl groups contained in the addition reaction curable silicone resin composition is 1 mol. On the other hand, it is preferably 1 ⁇ 10 ⁇ 8 to 1 ⁇ 10 ⁇ 2 mol, more preferably 1.0 ⁇ 10 ⁇ 6 to 1.0 ⁇ 10 ⁇ 3 mol. By setting the content to 1 ⁇ 10 ⁇ 8 mol or more, there is a tendency that a cured product can be formed more efficiently. On the other hand, when the content is 1 ⁇ 10 ⁇ 2 mol or less, there is a tendency that a cured product having a more excellent hue (less coloring) can be obtained.
- the addition reaction curable silicone resin composition may contain components other than those described above.
- the condensation reaction curable silicone resin composition includes, for example, two or more silanol groups (Si-OH) or silalkoxy groups (Si-OR) in the molecule as the silicone resin (B). And a curable silicone resin composition containing a metal curing catalyst and the like, if necessary.
- the polysiloxane (B2) may have only one of a silanol group and a silalkoxy group, or may have both a silanol group and a silalkoxy group. When it has both a silanol group and a silalkoxy group, the total number of these should just be 2 or more in a molecule
- polysiloxane (B2) the polyorganosiloxane represented by the following average compositional formula is mentioned, for example.
- R 11 is the same or different and represents a monovalent organic group having 1 to 20 carbon atoms.
- R 12 are the same or different and each represents a monovalent organic group having 1 to 4 carbon atoms.
- e is a number from 0.8 to 1.5
- f is a number from 0 to 0.3
- g is a number from 0 to 0.5.
- f + g is a number from 0.001 to less than 1.2.
- E + f + g is a number of 0.801 or more and less than 2.
- Examples of the monovalent organic group as R 11 in the average composition formula include, for example, a monovalent aliphatic hydrocarbon group (for example, an alkyl group, an alkenyl group, etc.); a monovalent aromatic hydrocarbon group (for example, Aryl groups, etc.); monovalent heterocyclic groups; monovalent groups formed by combining two or more of aliphatic hydrocarbon groups, alicyclic hydrocarbon groups, and aromatic hydrocarbon groups, and the like. .
- These monovalent organic groups may have a substituent (for example, a substituent such as a hydroxy group, a carboxy group, or a halogen atom).
- R 11 is preferably an alkyl group having 1 to 20 carbon atoms, an alkenyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 20 carbon atoms.
- the monovalent organic group as R 12 in the average composition formula include, for example, a monovalent aliphatic hydrocarbon group (for example, an alkyl group, an alkenyl group, etc.) that may have a substituent. Is mentioned.
- R 12 is preferably an alkyl group having 1 to 4 carbon atoms or an alkenyl group having 2 to 4 carbon atoms.
- polysiloxane (B2) in the above condensation reaction curable silicone resin composition, can be used alone or in combination of two or more.
- the condensation reaction curable silicone resin composition may contain a metal curing catalyst as described above.
- metal curing catalysts include known or conventional condensation reaction catalysts, such as organic titanate esters, organic titanium chelate compounds, organic aluminum compounds, organic zirconium compounds, organic tin compounds, and metal salts of organic carboxylic acids. Amine compounds or salts thereof, quaternary ammonium salts, lower fatty acid salts of alkali metals, dialkylhydroxylamines, guanidyl group-containing organosilicon compounds, and the like.
- an organic zirconium compound is preferable from the viewpoint of reactivity. These can also be used individually by 1 type and can also be used in combination of 2 or more type.
- the content (blending amount) of the metal curing catalyst (condensation reaction catalyst) in the condensation reaction curable silicone resin composition is not particularly limited, but is, for example, about 0.1 part by weight relative to 100 parts by weight of the total amount of polysiloxane (B2). It can be appropriately selected within the range of 01 to 20 parts by weight.
- the condensation reaction curable silicone resin composition may contain components other than those described above.
- the curable silicone resin composition of the present invention may contain other components.
- what was illustrated as a component which the curable epoxy resin composition of this invention may contain, etc. are mentioned, for example.
- the content is not particularly limited, and can be appropriately selected.
- the curable silicone resin composition of the present invention is a resin composition for encapsulating an optical semiconductor, it is preferable that the phosphor described above is included.
- the phosphor content (blending amount) in the curable silicone resin composition of the present invention is not particularly limited, and is 0.5 to 20% by weight based on the total amount (100% by weight) of the curable silicone resin composition. It can select suitably in the range of.
- the curable silicone resin composition of the present invention is not particularly limited, and can be prepared, for example, by stirring and mixing the above-described components while being heated as necessary.
- the curable silicone resin composition of the present invention may be a one-component composition that uses a mixture of all the components in advance, or, for example, a component divided into two or more. It may be a multi-liquid composition (for example, a two-liquid system) used by mixing at a predetermined ratio immediately before use.
- the method of stirring and mixing is not particularly limited, and for example, known or conventional stirring and mixing means such as various mixers such as a dissolver and a homogenizer, a kneader, a roll, a bead mill and a self-revolving stirrer can be used. Further, after stirring and mixing, defoaming may be performed under reduced pressure or under vacuum. Moreover, as a curable silicone resin composition of this invention or its component, a commercial item can also be used as it is.
- the curable acrylic resin composition (sometimes referred to as “the curable acrylic resin composition of the present invention”) includes a curable composition containing an acrylic resin (C) as an essential component. It is a thing.
- the curable acrylic resin composition of the present invention may contain components other than the acrylic resin (C).
- acrylic resin (C) examples include compounds having at least one (meth) acryloyl group (at least one group selected from the group consisting of an acryloyl group and a methacryloyl group) in the molecule.
- acrylic resin (C) examples include (meth) acryloyl compounds having only one (meth) acryloyl group in the molecule; polyfunctional (meth) acryloyl compounds having two or more (meth) acryloyl groups in the molecule. It is done.
- the (meth) acryloyl compound having only one (meth) acryloyl group in the molecule includes a monofunctional (meth) acryloyl compound having no polymerizable functional group other than the (meth) acryloyl group, In addition to the acryloyl group, a polyfunctional (meth) acryloyl compound having one or more other polymerizable functional groups such as an epoxy group, an oxetanyl group, a vinyl group, and a vinyloxy group.
- Acrylic resin (C) can also be used individually by 1 type, and can also be used in combination of 2 or more type.
- content of the acrylic resin (C) in the curable acrylic resin composition of this invention is not specifically limited, It can select suitably.
- the curable acrylic resin composition of the present invention may contain, for example, an initiator for causing the polymerization reaction of the acrylic resin (C) to proceed.
- an initiator for causing the polymerization reaction of the acrylic resin (C) to proceed.
- the initiator include known or conventional polymerization initiators such as a thermal polymerization initiator. These can also be used individually by 1 type and can also be used in combination of 2 or more type. Further, the content of the initiator is not particularly limited, and can be appropriately selected.
- the curable acrylic resin composition of the present invention may contain other components. As another component, what was illustrated as a component which the curable epoxy resin composition of this invention may contain, etc. are mentioned, for example.
- the content is not particularly limited, and can be appropriately selected.
- the curable acrylic resin composition of the present invention is a resin composition for encapsulating an optical semiconductor, it is preferable that the phosphor described above is included.
- the phosphor content (blending amount) in the curable acrylic resin composition of the present invention is not particularly limited, and is 0.5 to 20% by weight relative to the total amount (100% by weight) of the curable acrylic resin composition. It can select suitably in the range of.
- the curable acrylic resin composition of the present invention is not particularly limited, but can be prepared, for example, by stirring and mixing the above-described components in a heated state as necessary.
- the curable acrylic resin composition of the present invention may be a one-component composition that uses a mixture of all the components in advance, or, for example, a component divided into two or more. It may be a multi-liquid composition (for example, a two-liquid system) used by mixing at a predetermined ratio immediately before use.
- the method of stirring and mixing is not particularly limited, and for example, known or conventional stirring and mixing means such as various mixers such as a dissolver and a homogenizer, a kneader, a roll, a bead mill and a self-revolving stirrer can be used. Further, after stirring and mixing, defoaming may be performed under reduced pressure or under vacuum. Moreover, as a curable acrylic resin composition of this invention, or its structural component, it is also possible to use a commercial item as it is.
- the porous filler spreads over the entire resin layer, and as a result of stable dispersion, the porous filler present on the surface of the resin layer forms an uneven shape, and incident light is transmitted. Anti-reflection function is exhibited by scattering. Moreover, the porous structure on the surface of the porous filler can also scatter incident light, and the antireflection function is further improved.
- the method for spreading the porous filler throughout the resin layer is not particularly limited, and examples thereof include a method of uniformly dispersing the porous filler in the resin composition constituting the resin layer. In order to efficiently produce the antireflection material of the present invention, a method of uniformly dispersing the porous filler is preferred.
- the present invention is not limited thereto.
- the mixing / stirring method is not particularly limited.
- known or conventional stirring / mixing means such as various mixers such as a dissolver and a homogenizer, a kneader, a roll, a bead mill, and a self-revolving stirrer can be used.
- defoaming may be performed under reduced pressure or under vacuum.
- the properties of the antireflection material before curing of the present invention are not particularly limited, but are preferably liquid.
- the resin composition before curing that forms the antireflective material of the present invention can exhibit an antireflective function with a small amount of addition by using a porous filler, so that it can be made liquid without using a solvent such as toluene. It is easy to become and is preferable.
- the antireflection material of the present invention can be obtained by curing the resin layer in which the porous filler is uniformly dispersed to obtain a cured product (hereinafter sometimes referred to as “cured product of the present invention”).
- the amount of the component that volatilizes during curing relative to the total amount (100% by weight) of the antireflection material before curing is not particularly limited, but is preferably 10% by weight or less, more preferably 8% by weight or less, Preferably it is 5 weight% or less.
- the amount of the component that volatilizes during curing is 10% by weight or less, the dimensional stability of the cured product is increased, which is preferable.
- the anti-reflective material before curing of the present invention can exhibit an anti-reflective function with a small amount of addition by using a porous filler, and thus easily becomes liquid without using a volatile component of a solvent (toluene or the like). The amount of components that volatilize during curing can be reduced.
- the temperature for curing by heating is not particularly limited, but is preferably 45 to 200 ° C, more preferably 50 to 190 ° C, and still more preferably 55 to 180 ° C.
- the heating time (curing time) for curing is not particularly limited, but is preferably 30 to 600 minutes, more preferably 45 to 540 minutes, and further preferably 60 to 480 minutes.
- the curing conditions depend on various conditions, for example, when the curing temperature is increased, the curing time can be shortened, and when the curing temperature is decreased, the curing time can be appropriately increased. Moreover, hardening can also be performed in one step and can also be performed in two or more steps.
- light (radiation) including i-line (365 nm), h-line (405 nm), g-line (436 nm), etc. is irradiated at an illuminance of 10 to 1200 mW / cm 2 .
- the antireflection material of the present invention can be obtained by irradiating with a light amount of 20 to 2500 mJ / cm 2 .
- the irradiation light amount is preferably 20 to 600 mJ / cm 2 , more preferably 20 to 300 mJ / cm 2 .
- a high-pressure mercury lamp, xenon lamp, carbon arc lamp, metal halide lamp, laser light, or the like can be used as an irradiation source.
- the antireflection material of the present invention Since the antireflection material of the present invention has both high transparency and an excellent antireflection function as described above, it can be suitably used as a resin for optical materials (used for forming optical materials).
- An optical material is a material that exhibits various optical functions such as light diffusibility, light transmission, and light reflectivity.
- an optical member containing at least the cured product (optical material) of the present invention can be obtained.
- the said optical member may be comprised only from the reflection preventing material of this invention, and the reflection preventing material of this invention may be used for only one part.
- optical member examples include a member that expresses various optical functions such as light diffusibility, light transmittance, and light reflectivity, and a member that constitutes a device or an apparatus using the optical function.
- optical semiconductor devices organic EL devices, adhesives, electrical insulating materials, laminates, coatings, inks, paints, sealants, resists, composite materials, transparent substrates, transparent sheets, transparent films, optical elements, optics
- Examples thereof include known or conventional optical members used in various applications such as lenses, optical modeling, electronic paper, touch panels, solar cell substrates, optical waveguides, light guide plates, holographic memories, and optical pickup sensors.
- the antireflection material of the present invention has a fine and uniform uneven shape formed by the porous filler on the surface as a result of the porous filler being dispersed throughout the resin layer, and incident light is scattered by the uneven shape. Since total reflection does not occur, gloss can be suppressed and visibility can be improved.
- the arithmetic average surface roughness Ra of the concavo-convex shape formed on the antireflection material of the present invention is preferably in the range of 0.1 to 1.0 ⁇ m, and more preferably in the range of 0.2 to 0.8 ⁇ m.
- the arithmetic average surface roughness Ra of the concavo-convex shape is in this range, there is a tendency that a sufficient antireflection function can be exhibited without significantly impairing the total luminous flux.
- the arithmetic average surface roughness Ra is a numerical value defined by JIS B 0601-2001, and means a value measured and calculated by a method described in Examples described later.
- the antireflection material of the present invention can be preferably used as, for example, a resin composition for optical semiconductor encapsulation. That is, the antireflection material of the present invention can be preferably used as a composition for sealing an optical semiconductor element in an optical semiconductor device (an optical semiconductor element sealing material in an optical semiconductor device). An optical semiconductor device in which an optical semiconductor element is sealed with the antireflection material (for example, 104 in FIG. 1 is the antireflection material of the present invention) using the antireflection material (resin composition for optical semiconductor encapsulation) of the present invention.
- An optical semiconductor device comprised of:
- the optical semiconductor element can be sealed by, for example, injecting a resin composition in which a porous filler is uniformly dispersed into a predetermined mold and heat-curing or photocuring under predetermined conditions.
- the curing temperature, curing time, photocuring conditions, and the like can be set as appropriate within the same range as in the preparation of the antireflection material.
- the above-described optical semiconductor device of the present invention can particularly exhibit an excellent antireflection function without reducing the total luminous flux.
- the “optical semiconductor device of the present invention” means that the antireflective material of the present invention is used for at least a part of constituent members (for example, a sealing material, a die bonding material, etc.) of the optical semiconductor device.
- An optical semiconductor device is meant.
- Production Example 1 100 parts by weight of a curing agent (trade name “Licacid MH-700”, manufactured by Shin Nippon Rika Co., Ltd.), 0.5 part by weight of a curing accelerator (trade name “U-CAT 18X”, manufactured by Sun Apro Co., Ltd.), and 1 part by weight of ethylene glycol (manufactured by Wako Pure Chemical Industries, Ltd.) is mixed using a self-revolving stirrer (trade name “Awatori Nertaro AR-250”, manufactured by Shinky Co., Ltd., the same shall apply hereinafter) An epoxy curing agent (K agent) was produced.
- a curing agent trade name “Licacid MH-700”, manufactured by Shin Nippon Rika Co., Ltd.
- a curing accelerator trade name “U-CAT 18X”, manufactured by Sun Apro Co., Ltd.
- ethylene glycol manufactured by Wako Pure Chemical Industries, Ltd.
- Example 1 100 parts by weight of an alicyclic epoxy compound (trade name “Celoxide 2021P”, manufactured by Daicel Corporation) and 101.5 parts by weight of the epoxy curing agent obtained in Production Example 1 were mixed using a self-revolving stirrer, Defoaming was carried out to produce a curable epoxy resin composition.
- 100 parts by weight of the curable epoxy resin composition obtained above and 20 parts by weight of a porous filler (trade name “Silicia 430”, manufactured by Fuji Silysia Chemical Ltd.) are mixed using a self-revolving stirrer,
- the curable epoxy resin composition obtained by defoaming is cast on an optical semiconductor lead frame (InGaN element, 3.5 mm ⁇ 2.8 mm) shown in FIG.
- FIG. 1 100 is a reflector, 101 is a metal wiring, 102 is an optical semiconductor element, 103 is a bonding wire, 104 is a sealing material (antireflection material), and the porous filler is uniformly distributed throughout 104.
- corrugated shape is formed by the porous filler which exists in the upper surface among them (the uneven
- Examples 2 to 20 and Comparative Examples 1 to 6 An optical semiconductor device was manufactured in the same manner as in Example 1 except that the compositions of the curable epoxy resin composition and the porous filler were changed as shown in Tables 1 to 3.
- Example 21 Curable silicone resin composition (trade name “OE-6630A / B” (curable silicone resin, manufactured by Toray Dow Corning Co., Ltd.) 100 parts by weight, and porous filler (trade name “Silicia 430”, Fuji Silysia Chemical)
- a lead frame (InGaN element, 3.5 mm) of an optical semiconductor shown in FIG. 1 is prepared by mixing 20 parts by weight using a revolving stirrer and defoaming the curable silicone resin composition. ⁇ 2.8 mm), and then heated in a resin curing oven at 150 ° C. for 1 hour to produce an optical semiconductor device in which the optical semiconductor element was sealed with the antireflection material of the present invention.
- Examples 22-27 An optical semiconductor device was manufactured in the same manner as in Example 21 except that the composition of the curable silicone resin composition was changed as shown in Table 4.
- Example 28 100 parts by weight of curable acrylic resin composition (trade name “TB3030”, curable acrylic resin, manufactured by ThreeBond Co., Ltd.), and 20 weight of porous filler (trade name “Silicia 430”, manufactured by Fuji Silysia Chemical Ltd.)
- the curable acrylic resin composition obtained by mixing and defoaming the parts using a self-revolving stirrer was poured into an optical semiconductor lead frame (InGaN element, 3.5 mm ⁇ 2.8 mm) shown in FIG.
- Silicia 430 trade name “Cylicia 430”, manufactured by Fuji Silysia Chemical Ltd., volume average particle size: 4.1 ⁇ m; specific surface area: 350 m 2 / g; average pore size: 17 nm; pore volume: 1.25 mL / g Oil absorption: 230 mL / 100 g Pyrosphere C-1504: Trade name “Cyrosphere C-1504”, manufactured by Fuji Silysia Chemical Ltd., volume average particle size: 4.5 ⁇ m; specific surface area: 520 m 2 / g; average pore size: 12 nm; pore volume : 1.5 mL / g; Oil absorption: 290 mL / 100 g Sunsphere H-52: trade name “Sunsphere H-52” manufactured by AGC S-Tech Co., Ltd., volume average particle diameter: 5 ⁇ m; specific surface area: 350 m 2 / g; average pore size: 17 nm; pore volume: 1.25 m
- Celoxide 2021P Trade name “Celoxide 2021P” [3,4-epoxycyclohexylmethyl (3,4-epoxy) cyclohexanecarboxylate], manufactured by Daicel Corporation
- YD-128 Trade name “YD-128” [Bisphenol A type epoxy Resin], manufactured by Nippon Steel & Sumikin Chemical Co., Ltd.
- TEPIC-VL trade name “TEPIC-VL” [triglycidyl isocyanurate], manufactured by Nissan Chemical Industries, Ltd.
- 152 trade name “152” [phenol novolac type epoxy resin ], Manufactured by Mitsubishi Chemical Corporation YL7410: trade name “YL7410” [aliphatic epoxy compound], manufactured by Mitsubishi Chemical Corporation X-22-169AS: trade name “X-22-169AS” [modified silicone oil (both ends) Polydimethylsiloxane having a cyclohexene oxide group)], Shin Chemical Industry Co., Ltd.
- X-40-2670 trade name "X-40-2670” [cyclic siloxanes having a cyclohexene oxide group], manufactured by Shin-Etsu Chemical Co., Ltd.
- U-CAT 18X trade name “U-CAT 18X "[curing accelerator], manufactured by San Apro Co., Ltd.
- Ethylene glycol Wako Pure Chemical Industries, Ltd.
- SI-100L Trade name” Sun Aid SI-100L ", manufactured by San Apro Co., Ltd.
- OE-6630A / B trade name “OE-6630A / B” [addition reaction curable silicone resin], manufactured by Toray Dow Corning Co., Ltd.
- KER-2500A / B trade name “KER-2500A / B” [addition reaction Curable silicone resin (methyl rubber)], manufactured by Shin-Etsu Chemical Co., Ltd.
- SCR-1012A / B trade name "SCR-1012A / B” [addition reaction curable silicone resin (modified silicone)], Shin-Etsu Chemical Co., Ltd.
- ETERLED GD1012A / B Product name “ETERLED GD1012A / B” [addition reaction curable silicone resin (including polyorganosiloxysilalkylene)], ETERLED GD1130A / B: “ETERLED GD1130A / B” [ Addition reaction curable silicone resin (polyorganosiloxane) X-21-5841: trade name “X-21-5841” [condensation reaction curable silicone resin (silicone two-component RTV rubber)], manufactured by Shin-Etsu Chemical Co., Ltd. KF-9701: Trade name “KF-9701” [Condensation reaction curable silicone resin (modified silicone oil)], manufactured by Shin-Etsu Chemical Co., Ltd.
- the reflection of the fluorescent lamp is either ⁇ or ⁇ . It was confirmed that it has an excellent antireflection function.
- the arithmetic average surface roughness Ra of the optical semiconductor device of the example of the present invention in which the reflection of the fluorescent lamp was evaluated as “good” or “ ⁇ ” was in the range of 0.10 to 1.0 ⁇ m. It was confirmed that an uneven shape was formed.
- the total luminous flux of the optical semiconductor device according to the example of the present invention was 0.60 lm or more, indicating a good illuminance.
- the optical semiconductor devices of Comparative Example 2 in which the porous filler was blended in a blending amount smaller than the predetermined range of the present invention and Comparative Examples 4 to 6 in which the non-porous silica filler was added were The reflection of the fluorescent lamp was evaluated as x (defective), the value of the arithmetic average surface roughness Ra was low (less than 0.1 ⁇ m), and only the antireflection function of Comparative Example 1 to which no filler was added was shown. .
- the amount of the porous filler was not sufficient, and in Comparative Examples 4 to 6, it was considered that the surface was not formed with uniform and fine irregularities as a result of sedimentation of the silica filler.
- Comparative Example 3 in which the porous filler was blended in a blending amount larger than the predetermined range of the present invention, while showing a good antireflection function, the total luminous flux was 0.46 lm or more, and the illuminance was significantly reduced. It is considered that light was absorbed because the amount of the porous filler was large.
- the antireflection material of the present invention has both high transparency and an excellent antireflection function, it can be suitably used as a resin for optical materials (used for forming optical materials).
- the optical member include a member that expresses various optical functions such as light diffusibility, light transmittance, and light reflectivity, and a member that constitutes a device or an apparatus using the optical function.
- optical semiconductor devices organic EL devices, adhesives, electrical insulating materials, laminates, coatings, inks, paints, sealants, resists, composite materials, transparent substrates, transparent sheets, transparent films, optical elements, optics
- optical members include known or conventional optical members used in various applications such as lenses, optical modeling, electronic paper, touch panels, solar cell substrates, optical waveguides, light guide plates, holographic memories, and optical pickup sensors.
- Reflector resin composition for light reflection
- Metal wiring electrode
- Optical semiconductor element 103
- Bonding wire 104: Sealing material (antireflection material)
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Abstract
Description
従来、樹脂層の表面に反射防止機能を付与する方法としては、樹脂にガラスビーズ、シリカ等の無機フィラーを分散させることによって入射光を散乱させる方法が知られている(例えば、特許文献1参照)。
また、本発明の他の目的は、光半導体封止用樹脂組成物である、上記反射防止材を提供することである。
さらに、本発明の他の目的は、上記反射防止材により光半導体素子が封止された光半導体装置を提供することである。
本発明者は上記課題を解決するために鋭意検討した結果、反射防止材を構成する樹脂層中のフィラーとして多孔質フィラーを配合したところ、少量の添加でも十分な反射防止機能が付与されることを見出した。これにより、光源の全光束を大幅に低下させることなく十分な反射防止機能を有する反射防止材が提供され、光半導体装置における光半導体素子を封止するための材料として極めて適していることを見出し、本発明を完成するに至った。
[1]多孔質フィラーが分散された樹脂層からなる反射防止材であって、当該多孔質フィラーは当該樹脂層の表面に反射を抑える凹凸を形成し、反射防止材全量(100重量%)に対する多孔質フィラーの含有量が4~40重量%であることを特徴とする、反射防止材。
[2]多孔質フィラーが、樹脂層全体に均一に行き渡っている、上記[1]に記載の反射防止材。
[3]多孔質フィラーが、無機多孔質フィラー、及び有機多孔質フィラーからなる群から選ばれる少なくとも1種(好ましくは無機多孔質フィラー)である、上記[1]又は[2]に記載の反射防止材。
[4]無機多孔質フィラーが、無機ガラス[例えば、硼珪酸ガラス、硼珪酸ソーダガラス、珪酸ソーダガラス、アルミ珪酸ガラス、石英等]、シリカ、アルミナ、ジルコン、珪酸カルシウム、リン酸カルシウム、炭酸カルシウム、炭酸マグネシウム、炭化ケイ素、窒化ケイ素、窒化ホウ素、水酸化アルミニウム、酸化鉄、酸化亜鉛、酸化ジルコニウム、酸化マグネシウム、酸化チタン、酸化アルミニウム、硫酸カルシウム、硫酸バリウム、フォステライト、ステアタイト、スピネル、クレー、カオリン、ドロマイト、ヒドロキシアパタイト、ネフェリンサイナイト、クリストバライト、ウォラストナイト、珪藻土、及びタルクからなる群から選ばれる少なくとも一種の粉体であって多孔質構造を有するもの、又はこれらの成型体(例えば、球形化したビーズ等)(好ましくは多孔質無機ガラス又は多孔質シリカ、より好ましくは多孔質シリカ)である、上記[1]~[3]のいずれか1つに記載の反射防止材。
[5]無機多孔質フィラーが、表面処理[例えば、金属酸化物、シランカップリング剤、チタンカップリング剤、有機酸、ポリオール、シリコーン等の表面処理剤による表面処理等]が施されたものである、上記[1]~[4]のいずれか1つに記載の反射防止材。
[6]多孔質シリカが、溶融シリカ、結晶シリカ、高純度合成シリカ、及びコロイド状シリカからなる群から選ばれる少なくとも一種の多孔質シリカである、上記[4]又は[5]に記載の反射防止材。
[7]有機多孔質フィラーが、スチレン系樹脂、アクリル系樹脂、シリコーン系樹脂、アクリル-スチレン系樹脂、塩化ビニル系樹脂、塩化ビニリデン系樹脂、アミド系樹脂、ウレタン系樹脂、フェノール系樹脂、スチレン-共役ジエン系樹脂、アクリル-共役ジエン系樹脂、オレフィン系樹脂、及びセルロース樹脂等のポリマー(これらポリマーの架橋体も含む)からなる群から選ばれる少なくとも一種の有機物により構成された高分子多孔質焼結体、高分子発泡体、又はゲル多孔質体である、上記[1]~[6]のいずれか1つに記載の反射防止材。
[8]多孔質フィラーの形状が、粉体、球状、破砕状、繊維状、針状、及び鱗片状からなる群から選ばれる少なくとも一種(好ましくは球状、又は破砕状)である、上記[1]~[7]のいずれか1つに記載の反射防止材。
[9]多孔質フィラーの中心粒径が、0.1~100μm(好ましくは1~50μm)である、上記[1]~[8]のいずれか1つに記載の反射防止材。
[10]多孔質フィラーの比表面積が、10~2000m2/g(好ましくは100~1000m2/g)である、上記[1]~[9]のいずれか1つに記載の反射防止材。
[11]多孔質フィラーの細孔容積が、0.1~10mL/g(好ましくは0.2~5mL/g)である、上記[1]~[10]のいずれか1つに記載の反射防止材。
[12]多孔質フィラーの吸油量が、10~2000mL/100g(好ましくは100~1000mL/100g)である、上記[1]~[11]のいずれか1つに記載の反射防止材。
[13]多孔質フィラーの含有量(配合量)が、反射防止材を全量(100重量%)に対して、4~35重量%(好ましくは4~30重量%)である、上記[1]~[12]のいずれか1つに記載の反射防止材。
[14]多孔質フィラーの含有量(配合量)が、反射防止材を構成する樹脂組成物(100重量部)に対して、5~80重量部(好ましくは5~70重量部、より好ましくは5~60重量部)である、上記[1]~[13]のいずれか1つに記載の反射防止材。
[16]硬化前の反射防止材が、液状である、上記[1]~[15]のいずれか1つに記載の反射防止材。
[17]硬化前の反射防止材の全量(100重量%)に対する硬化中に揮発する成分の量が、10重量%以下(好ましくは8重量%以下であり、さらに好ましくは5重量%以下)である、上記[1]~[16]のいずれか1つに記載の反射防止材。
[18]前記樹脂層は、透明な硬化性樹脂組成物からなる、上記[1]~[17]のいずれか1つに記載の反射防止材。
[19]前記硬化性樹脂組成物が、エポキシ樹脂、シリコーン樹脂、及びアクリル樹脂からなる群より選択される少なくとも1種の硬化性化合物を含む組成物からなる、上記[18]に記載の反射防止材。
[20]反射防止材に形成された凹凸形状の算術平均表面粗さRaが、0.1~1.0μmの範囲(好ましくは0.2~0.8μmの範囲)である、上記[1]~[19]のいずれか1つに記載の反射防止材。
[21]光半導体封止用樹脂組成物である、上記[1]~[20]のいずれか1つに記載の反射防止材。
[22]上記[21]に記載の反射防止材により光半導体素子が封止された光半導体装置。
本発明の反射防止材は、多孔質フィラーが樹脂層に分散され、当該多孔質フィラーが当該樹脂層の表面に反射を抑える凹凸を形成し、反射防止材全量(100重量%)に対する多孔質フィラーの含有量が4~40重量%であることを特徴とするものである。
なお、本明細書において、多孔質フィラーの添加量(使用量)が少量(少ない)とは、重量換算で少ないことを意味し、容量(体積)換算で少ないことを意味するものではない。
以下、各構成要素について詳細に説明する。
本発明の反射防止材における多孔質フィラーは、樹脂層全体に行き渡っており、分散状態が安定した結果、樹脂層の表面に存在する多孔質フィラーが入射光を散乱させるための凹凸を形成する働きを有する。
また、上記無機物と有機物のハイブリッド材料により構成された無機-有機多孔質フィラー等も使用することができる。
本発明の反射防止材における樹脂層を構成する樹脂は、特に限定されるものではないが、光半導体装置における光半導体素子の封止材、即ち、光半導体封止用樹脂組成物として適したものが好ましく使用可能であり、例えば、熱又は光により硬化して、高い透明性を有し、耐久性(例えば、加熱によっても透明性が低下しにくい特性、高温の熱や熱衝撃が加えられてもクラックや被着体からの剥離が生じにくい特性等)にも優れる硬化物を与える硬化性樹脂を好適に使用できる。
また、本発明の反射防止材は、光半導体封止用樹脂組成物の用途に限定されるものではなく、例えば、後述の各種光学部材等にも適用可能であり、それぞれの用途に適した樹脂(例えば、ポリオレフィン樹脂、ポリエステル樹脂、ポリアミド樹脂、ポリウレタン樹脂など)にも適用可能である。
本発明の反射防止材における樹脂層を構成する樹脂としては、耐熱性、透明性、耐久性等に優れる硬化性エポキシ樹脂組成物、硬化性シリコーン樹脂組成物、硬化性アクリル樹脂組成物が好ましく、硬化性エポキシ樹脂組成物がより好ましい。
上記硬化性エポキシ樹脂組成物(「本発明の硬化性エポキシ樹脂組成物」と称する場合がある)は、エポキシ樹脂(A)を必須成分として含む硬化性組成物である。本発明の硬化性エポキシ樹脂組成物は、さらに、硬化剤(D)及び硬化促進剤(E)、又は、硬化触媒(F)を必須成分として含む。即ち、本発明の硬化性エポキシ樹脂組成物は、エポキシ樹脂(A)と硬化剤(D)と硬化促進剤(E)とを必須成分として含む組成物、又は、エポキシ樹脂(A)と硬化触媒(F)とを必須成分として含む組成物である。本発明の硬化性エポキシ樹脂組成物は、上述の必須成分以外のその他の成分を含んでいてもよい。
本発明の硬化性エポキシ樹脂組成物におけるエポキシ樹脂(A)は、分子内に1個以上のエポキシ基(オキシラン環)を有する化合物であり、公知乃至慣用のエポキシ化合物から任意に選択して用いることができる。エポキシ樹脂(A)としては、例えば、芳香族エポキシ化合物(芳香族エポキシ樹脂)、脂肪族エポキシ化合物(脂肪族エポキシ樹脂)、脂環式エポキシ化合物(脂環式エポキシ樹脂)、複素環式エポキシ化合物(複素環式エポキシ樹脂)、分子内にエポキシ基を1個以上有するシロキサン誘導体等が挙げられる。
本発明の硬化性エポキシ樹脂組成物の必須成分のひとつである硬化剤(D)は、エポキシ化合物と反応することにより硬化性エポキシ樹脂組成物を硬化させる働きを有する化合物である。硬化剤(D)としては、特に限定されず、エポキシ樹脂用硬化剤として周知慣用のものを使用することができ、例えば、酸無水物類(酸無水物系硬化剤)、アミン類(アミン系硬化剤)、ポリアミド樹脂、イミダゾール類(イミダゾール系硬化剤)、ポリメルカプタン類(ポリメルカプタン系硬化剤)、フェノール類(フェノール系硬化剤)、ポリカルボン酸類、ジシアンジアミド類、有機酸ヒドラジド等が挙げられる。
本発明の硬化性エポキシ樹脂組成物の必須成分のひとつである硬化促進剤(E)は、エポキシ化合物の反応(特に、エポキシ樹脂(A)と硬化剤(D)との反応)の反応速度を促進する機能を有する化合物である。硬化促進剤(E)としては、エポキシ樹脂用硬化促進剤として周知慣用のものを使用することができ、特に限定されないが、例えば、1,8-ジアザビシクロ[5.4.0]ウンデセン-7(DBU)、及びその塩(例えば、フェノール塩、オクチル酸塩、p-トルエンスルホン酸塩、ギ酸塩、テトラフェニルボレート塩等);1,5-ジアザビシクロ[4.3.0]ノネン-5(DBN)、及びその塩(例えば、フェノール塩、オクチル酸塩、p-トルエンスルホン酸塩、ギ酸塩、テトラフェニルボレート塩等);ベンジルジメチルアミン、2,4,6-トリス(ジメチルアミノメチル)フェノール、N,N-ジメチルシクロヘキシルアミン等の3級アミン;2-エチル-4-メチルイミダゾール、1-シアノエチル-2-エチル-4-メチルイミダゾール等のイミダゾール;リン酸エステル、トリフェニルホスフィン等のホスフィン類;テトラフェニルホスホニウムテトラ(p-トリル)ボレート等のホスホニウム化合物;オクチル酸スズ、オクチル酸亜鉛等の有機金属塩;金属キレート等が挙げられる。
本発明の硬化性エポキシ樹脂組成物の必須成分のひとつである硬化触媒(F)は、エポキシ化合物等のカチオン重合性化合物の硬化反応(重合反応)を開始及び/又は促進させることにより、硬化性エポキシ樹脂組成物を硬化させる働きを有する化合物である。硬化触媒(F)としては、特に限定されないが、例えば、熱によりカチオン種を発生して、重合を開始させるカチオン重合開始剤(熱カチオン重合開始剤)や、ルイス酸・アミン錯体、ブレンステッド酸塩類、イミダゾール類等が挙げられる。
本発明の硬化性エポキシ樹脂組成物は、多価アルコールを含んでいてもよい。特に、本発明の硬化性エポキシ樹脂組成物が硬化剤(D)及び硬化促進剤(E)を含む場合には、硬化をより効率的に進行させることができる点で、さらに多価アルコールを含むことが好ましい。多価アルコールとしては、公知乃至慣用の多価アルコールを使用することができ、特に限定されないが、例えば、エチレングリコール、プロピレングリコール、ブチレングリコール、1,3-ブタンジオール、1,4-ブタンジオール、1,6-ヘキサンジオール、ジエチレングリコール、トリエチレングリコール、ネオペンチルグリコール、ポリエチレングリコール、ポリプロピレングリコール、ポリブチレングリコール、トリメチロールプロパン、グリセリン、ペンタエリスリトール、ジペンタエリスリトール等が挙げられる。
本発明の硬化性エポキシ樹脂組成物は、蛍光体を含んでいてもよい。本発明の硬化性エポキシ樹脂組成物が蛍光体を含む場合には、光半導体装置における光半導体素子の封止用途(封止材用途)、即ち、光半導体封止用樹脂組成物として特に好ましく使用できる。上記蛍光体としては、公知乃至慣用の蛍光体(特に、光半導体素子の封止用途において使用される蛍光体)を使用でき、特に限定されないが、例えば、一般式A3B5O12:M[式中、Aは、Y、Gd、Tb、La、Lu、Se、及びSmからなる群より選択された1種以上の元素を示し、Bは、Al、Ga、及びInからなる群より選択された1種以上の元素を示し、Mは、Ce、Pr、Eu、Cr、Nd、及びErからなる群より選択された1種以上の元素を示す]で表されるYAG系の蛍光体微粒子(例えば、Y3Al5O12:Ce蛍光体微粒子、(Y,Gd,Tb)3(Al,Ga)5O12:Ce蛍光体微粒子等)、シリケート系蛍光体微粒子(例えば、(Sr,Ca,Ba)2SiO4:Eu等)等が挙げられる。なお、蛍光体は、例えば、分散性向上のために、有機基(例えば、長鎖アルキル基、リン酸基等)等により表面が修飾されたものであってもよい。本発明の硬化性エポキシ樹脂組成物において蛍光体は、1種を単独で使用することもできるし、2種以上を組み合わせて使用することもできる。また、蛍光体としては市販品を使用することができる。
本発明の硬化性エポキシ樹脂組成物は、硬化性や透明性等に大きな悪影響が及ばない範囲で、上記以外のその他の成分を含んでいてもよい。上記その他の成分としては、例えば、直鎖又は分岐鎖を有するシリコーン系樹脂、脂環を有するシリコーン系樹脂、芳香環を有するシリコーン系樹脂、かご型/ラダー型/ランダム型のシルセスキオキサン、γ-グリシドキシプロピルトリメトキシシラン等のシランカップリング剤、シリコーン系やフッ素系の消泡剤等が挙げられる。上記その他の成分の含有量(配合量)は、特に限定されないが、硬化性エポキシ樹脂組成物の全量(100重量%)に対して、5重量%以下(例えば、0~3重量%)が好ましい。
上記硬化性シリコーン樹脂組成物(「本発明の硬化性シリコーン樹脂組成物」と称する場合がある)は、硬化性化合物としてシリコーン樹脂(B)を必須成分として含む硬化性組成物である。本発明の硬化性シリコーン樹脂組成物は、シリコーン樹脂(B)以外の成分を含んでいてもよい。
上記付加反応硬化性シリコーン樹脂組成物としては、例えば、シリコーン樹脂(B)として分子内に2個以上のアルケニル基を有するポリシロキサン(B1)を含有し、さらに必要に応じて、分子内に1個以上(好ましくは2個以上)のヒドロシリル基を有するポリシロキサンや金属硬化触媒等を含む硬化性シリコーン樹脂組成物が挙げられる。
(R7SiO3/2)a1(R7 2SiO2/2)a2(R7 3SiO1/2)a3(SiO4/2)a4(ZO1/2)a5
で表されるポリオルガノシロキサンが好ましい。上記平均単位式中、R7は、同一又は異なって、1価の置換又は無置換炭化水素基であり、上述の具体例(例えば、アルキル基、アルケニル基、アリール基、アラルキル基、ハロゲン化炭化水素基等)が挙げられる。但し、R7の一部はアルケニル基(特にビニル基)であり、その割合は、分子内に2個以上となる範囲に制御される。例えば、R7の全量(100モル%)に対するアルケニル基の割合は、0.1~40モル%が好ましい。アルケニル基の割合を上記範囲に制御することにより、硬化性シリコーン樹脂組成物の硬化性がより向上する傾向がある。また、アルケニル基以外のR7としては、アルキル基(特にメチル基)、アリール基(特にフェニル基)が好ましい。
(R8 2SiO2/2)b1(R8 3SiO1/2)b2(R8SiO3/2)b3(SiO4/2)b4(RA)b5(ZO1/2)b6
で表されるポリオルガノシロキシシルアルキレンが好ましい。上記平均単位式中、R8は、同一又は異なって、1価の置換又は無置換炭化水素基であり、上述の具体例(例えば、アルキル基、アルケニル基、アリール基、アラルキル基、ハロゲン化アルキル基等)が挙げられる。但し、R8の一部はアルケニル基(特にビニル基)であり、その割合は、分子内に2個以上となる範囲に制御される。例えば、R8の全量(100モル%)に対するアルケニル基の割合は、0.1~40モル%が好ましい。アルケニル基の割合を上記範囲に制御することにより、硬化性シリコーン樹脂組成物の硬化性がより向上する傾向がある。また、アルケニル基以外のR8としては、アルキル基(特にメチル基)、アリール基(特にフェニル基)が好ましい。
(R9SiO3/2)c1(R9 2SiO2/2)c2(R9 3SiO1/2)c3(SiO4/2)c4(ZO1/2)c5
で表されるポリオルガノシロキサンが好ましい。上記平均単位式中、R9は、同一又は異なって、水素原子、又は、1価の置換若しくは無置換炭化水素基であり、水素原子、上述の具体例(例えば、アルキル基、アルケニル基、アリール基、アラルキル基、ハロゲン化アルキル基等)が挙げられる。但し、R9の一部は水素原子(ヒドロシリル基を構成する水素原子)であり、その割合は、ヒドロシリル基が分子内に1個以上(好ましくは2個以上)となる範囲に制御される。例えば、R9の全量(100モル%)に対する水素原子の割合は、0.1~40モル%が好ましい。水素原子の割合を上記範囲に制御することにより、硬化性シリコーン樹脂組成物の硬化性がより向上する傾向がある。また、水素原子以外のR9としては、アルキル基(特にメチル基)、アリール基(特にフェニル基)が好ましい。
(R10 2SiO2/2)d1(R10 3SiO1/2)d2(R10SiO3/2)d3(SiO4/2)d4(RA)d5(ZO1/2)d6
で表されるポリオルガノシロキシシルアルキレンが好ましい。上記平均単位式中、R10は、同一又は異なって、水素原子、又は1価の置換若しくは無置換炭化水素基であり、水素原子及び上述の具体例(例えば、アルキル基、アルケニル基、アリール基、アラルキル基、ハロゲン化アルキル基等)が挙げられる。但し、R10の一部は水素原子であり、その割合は、分子内に1個以上(好ましくは2個以上)となる範囲に制御される。例えば、R10の全量(100モル%)に対する水素原子の割合は、0.1~50モル%が好ましく、より好ましくは5~35モル%である。水素原子の割合を上記範囲に制御することにより、硬化性シリコーン樹脂組成物の硬化性がより向上する傾向がある。また、水素原子以外のR10としては、アルキル基(特にメチル基)、アリール基(特にフェニル基)が好ましい。特に、R10の全量(100モル%)に対するアリール基(特にフェニル基)の割合は、5モル%以上(例えば、5~80モル%)が好ましく、より好ましくは10モル%以上である。
上記縮合反応硬化性シリコーン樹脂組成物としては、例えば、シリコーン樹脂(B)として分子内に2個以上のシラノール基(Si-OH)又はシルアルコキシ基(Si-OR)を有するポリシロキサン(B2)を含有し、さらに必要に応じて金属硬化触媒等を含む硬化性シリコーン樹脂組成物が挙げられる。なお、ポリシロキサン(B2)は、シラノール基とシルアルコキシ基のいずれか一方のみを有するものであってもよいし、シラノール基とシルアルコキシ基の両方を有するものであってもよい。シラノール基とシルアルコキシ基の両方を有する場合、これらの合計数が分子内に2個以上であればよい。
R11 eSi(OR12)f(OH)gO(4-e-f-g)/2
[上記平均組成式中、R11は、同一又は異なって、炭素数1~20の1価の有機基を示す。R12は、同一又は異なって、炭素数1~4の1価の有機基を示す。eは0.8~1.5の数、fは0~0.3の数、gは0~0.5の数を示す。f+gは0.001以上1.2未満の数である。また、e+f+gは、0.801以上2未満の数である。]
上記硬化性アクリル樹脂組成物(「本発明の硬化性アクリル樹脂組成物」と称する場合がある)は、硬化性化合物としてアクリル樹脂(C)を必須成分として含む硬化性組成物である。本発明の硬化性アクリル樹脂組成物は、アクリル樹脂(C)以外の成分を含んでいてもよい。
本発明の反射防止材は、上記多孔質フィラーが上記樹脂層全体に行き渡っており、分散状態が安定した結果、樹脂層の表面に存在する多孔質フィラーが凹凸形状を形成して、入射光を散乱させることにより反射防止機能を発揮する。また、多孔質フィラー表面の多孔質構造も入射光を散乱させることができ、さらに反射防止機能が向上する。
上記多孔質フィラーを上記樹脂層全体に行き渡らせる方法は、特に限定させず、例えば、樹脂層を構成する樹脂組成物に多孔質フィラーを均一に分散させる方法等が挙げられる。本発明の反射防止材を効率的に製造するためには、多孔質フィラーを均一に分散させる方法が好ましい。
以下に、本発明の反射防止材の製造方法の一態様を説明するが、本発明はこれに限定されるものではない。
多孔質フィラーが均一に分散した樹脂層を硬化させて硬化物(以下、「本発明の硬化物」と称する場合がある)とすることにより、本発明の反射防止材を得ることができる。
硬化前の反射防止材の全量(100重量%)に対する、硬化中に揮発する成分の量は、特に限定されないが、好ましくは10重量%以下であり、より好ましくは8重量%以下であり、さらに好ましくは5重量%以下である。硬化中に揮発する成分の量が10重量%以下であることにより、硬化物の寸法安定性が高くなり、好ましい。本発明の硬化前の反射防止材は、多孔性フィラーを用いることで少量の添加で反射防止機能を発現することができるため、溶剤(トルエン等)の揮発成分を使用しなくとも液状になりやすく、硬化中に揮発する成分の量を少なくすることができる。
また、光照射により硬化させる場合は、例えば、i-線(365nm)、h-線(405nm)、g-線(436nm)等を含む光(放射線)を、照度10~1200mW/cm2、照射光量20~2500mJ/cm2で照射することにより本発明の反射防止材を得ることができる。放射線による樹脂層の劣化を抑える観点と、生産性の観点から、好ましくは放射線の照射光量20~600mJ/cm2、より好ましくは照射光量20~300mJ/cm2が望ましい。照射には、高圧水銀ランプ、キセノンランプ、カーボンアークランプ、メタルハライドランプ、レーザー光等を照射源として使用することができる。
本発明の反射防止材は、上述の通り、高い透明性と優れた反射防止機能を兼ね備えるため、光学材料用の(光学材料を形成する用途に用いられる)樹脂として好適に使用することができる。光学材料とは、光拡散性、光透過性、光反射性等の各種の光学的機能を発現する材料である。本発明の反射防止材を使用することで、本発明の硬化物(光学材料)を少なくとも含む光学部材が得られる。なお、当該光学部材は、本発明の反射防止材のみから構成されたものであってもよいし、本発明の反射防止材が一部のみに使用されたものであってもよい。光学部材としては、光拡散性、光透過性、光反射性等の各種の光学的機能を発現する部材や、上記光学的機能を利用した装置や機器を構成する部材等が挙げられ、特に限定されず、例えば、光半導体装置、有機EL装置、接着剤、電気絶縁材、積層板、コーティング、インク、塗料、シーラント、レジスト、複合材料、透明基材、透明シート、透明フィルム、光学素子、光学レンズ、光造形、電子ペーパー、タッチパネル、太陽電池基板、光導波路、導光板、ホログラフィックメモリ、光ピックアップセンサー等の各種用途において使用される公知乃至慣用の光学部材が例示される。
なお、本発明において算術平均表面粗さRaは、JIS B 0601-2001により定義される数値であり、後述の実施例に記載の方法により測定、算出されたものを意味するものとする。
硬化剤(商品名「リカシッドMH-700」、新日本理化(株)製)100重量部、硬化促進剤(商品名「U-CAT 18X」、サンアプロ(株)製)0.5重量部、及びエチレングリコール(和光純薬工業(株)製)1重量部を、自公転式撹拌装置(商品名「あわとり練太郎 AR-250」、(株)シンキー製、以下同じ)を用いて混合し、エポキシ硬化剤(K剤)を製造した。
脂環式エポキシ化合物(商品名「セロキサイド2021P」、(株)ダイセル製)100重量部、製造例1で得られたエポキシ硬化剤101.5重量部を自公転式撹拌装置を用いて混合し、脱泡して、硬化性エポキシ樹脂組成物を製造した。
上記で得られた硬化性エポキシ樹脂組成物100重量部、及び多孔質フィラー(商品名「サイリシア430」、富士シリシア化学(株)製)20重量部を自公転式撹拌装置を用いて混合し、脱泡して得られた硬化性エポキシ樹脂組成物を図1に示す光半導体のリードフレーム(InGaN素子、3.5mm×2.8mm)に注型した後、150℃の樹脂硬化オーブンで5時間加熱することで、本発明の反射防止材により光半導体素子が封止された光半導体装置を製造した。なお、図1において、100はリフレクター、101は金属配線、102は光半導体素子、103はボンディングワイヤ、104は封止材(反射防止材)を示し、104の全体に渡り多孔質フィラーが均一に分散しており、そのうちの上部表面に存在する多孔質フィラーにより均一で微細な凹凸形状が形成されている(凹凸形状は図示略)。
硬化性エポキシ樹脂組成物、多孔質フィラーの組成を表1~3に示すように変更したこと以外は実施例1と同様にして、光半導体装置を製造した。
硬化性シリコーン樹脂組成物(商品名「OE-6630A/B」(硬化性シリコーン樹脂、東レ・ダウコーニング(株)製)100重量部、及び多孔質フィラー(商品名「サイリシア430」、富士シリシア化学(株)製)20重量部を自公転式撹拌装置を用いて混合し、脱泡して得られた硬化性シリコーン樹脂組成物を図1に示す光半導体のリードフレーム(InGaN素子、3.5mm×2.8mm)に注型した後、150℃の樹脂硬化オーブンで1時間加熱することで、本発明の反射防止材により光半導体素子が封止された光半導体装置を製造した。
硬化性シリコーン樹脂組成物の組成を表4に示すように変更したこと以外は実施例21と同様にして、光半導体装置を製造した。
硬化性アクリル樹脂組成物(商品名「TB3030」、硬化性アクリル樹脂、(株)スリーボンド製)100重量部、及び多孔質フィラー(商品名「サイリシア430」、富士シリシア化学(株)製)20重量部を自公転式撹拌装置を用いて混合し、脱泡して得られた硬化性アクリル樹脂組成物を図1に示す光半導体のリードフレーム(InGaN素子、3.5mm×2.8mm)に注型した後、24時間、室温で静置し、更に高圧水銀ランプ(UVC-02516S1AA02:ウシオ電機社製、照度120mW/cm2、照射光量199mJ/cm2)で光照射し、本発明の反射防止材により光半導体素子が封止された光半導体装置(光半導体素子が反射防止材により封止された光半導体装置)を製造した。
上記で製造した光半導体装置について、下記の評価を行った。結果を表1~4のそれぞれに示す。
実施例、比較例で得られた光半導体装置の上面(図1の封止材104の上面)に点灯した蛍光灯を当てて反射を見た際に、反射防止材に映る蛍光灯の鮮明さを目視で3段階評価した。
蛍光灯の輪郭が認識できない場合を○、輪郭が不鮮明ながら認識できる場合を△、輪郭が鮮明に認識できる場合を×とした。
(2)算術平均表面粗さRa
実施例、比較例で得られた光半導体装置の上面(図1の封止材104の上面)を、レーザー顕微鏡(商品名「形状測定レーザマイクロスコープ VK-8710」、キーエンス社製)を用いて測定した。
実施例、比較例で得られた各光半導体装置について、5V、20mAの条件で通電した際の全光束を、全光束測定機(商品名「マルチ分光放射測定システム OL771」、オプトロニックラボラトリーズ社製)を用いて測定した。
実施例、比較例で得られた各光半導体装置について、下記(a)~(c)を全て満足する場合を○(良好である)、下記(a)~(c)のいずれかを満足しない場合を×(不良である)と判定した。
(a)上記(1)において測定された蛍光灯の映り込みが、○又は△である。
(b)上記(2)において測定された算術平均表面粗さRaが0.10~1.0μmである。
(c)上記(3)において測定された全光束が0.60lm以上である。
(多孔質フィラー)
サイリシア430:商品名「サイリシア430」、富士シリシア化学(株)製、体積平均粒子径:4.1μm;比表面積:350m2/g;平均細孔径:17nm;細孔容積:1.25mL/g;吸油量:230mL/100g
サイロスフェアC-1504:商品名「サイロスフェアC-1504」、富士シリシア化学(株)製、体積平均粒子径:4.5μm;比表面積:520m2/g;平均細孔径:12nm;細孔容積:1.5mL/g;吸油量:290mL/100g
サンスフェアH-52:商品名「サンスフェアH-52」、AGCエスアイテック(株)製、体積平均粒子径:5μm;比表面積:700m2/g;平均細孔径:10nm;細孔容積:2mL/g;吸油量:300mL/100g
溶融破砕状シリカ:(株)龍森製、体積平均粒径:6~7μm
溶融球状シリカ:(株)龍森製、体積平均粒径:5μm
結晶性破砕状シリカ:(株)龍森製、体積平均粒径:5μm
セロキサイド2021P:商品名「セロキサイド2021P」[3,4-エポキシシクロヘキシルメチル(3,4-エポキシ)シクロヘキサンカルボキシレート]、(株)ダイセル製
YD-128:商品名「YD-128」[ビスフェノールA型エポキシ樹脂]、新日鐡住金化学(株)製
TEPIC-VL:商品名「TEPIC-VL」[トリグリシジルイソシアヌレート]、日産化学工業(株)製
152:商品名「152」[フェノールノボラック型エポキシ樹脂]、三菱化学(株)製
YL7410:商品名「YL7410」[脂肪族エポキシ化合物]、三菱化学(株)製
X-22-169AS:商品名「X-22-169AS」[変性シリコーンオイル(両末端にシクロヘキセンオキシド基を有するポリジメチルシロキサン)]、信越化学工業(株)製
X-40-2670:商品名「X-40-2670」[シクロヘキセンオキシド基を有する環状シロキサン]、信越化学工業(株)製
MH-700:商品名「リカシッドMH-700」[4-メチルヘキサヒドロ無水フタル酸/ヘキサヒドロ無水フタル酸=70/30]、新日本理化(株)製
U-CAT 18X:商品名「U-CAT 18X」[硬化促進剤]、サンアプロ(株)製
エチレングリコール:和光純薬工業(株)製
SI-100L:商品名「サンエイド SI-100L」、サンアプロ(株)製
OE-6630A/B:商品名「OE-6630A/B」[付加反応硬化性シリコーン樹脂]、東レ・ダウコーニング(株)製
KER-2500A/B:商品名「KER-2500A/B」[付加反応硬化性シリコーン樹脂(メチルゴム)]、信越化学工業(株)製
SCR-1012A/B:商品名「SCR-1012A/B」[付加反応硬化性シリコーン樹脂(変性シリコーン)]、信越化学工業(株)製
ETERLED GD1012A/B:商品名「ETERLED GD1012A/B」[付加反応硬化性シリコーン樹脂(ポリオルガノシロキシシルアルキレンを含む)]、長興化学工業製
ETERLED GD1130A/B:商品名「ETERLED GD1130A/B」[付加反応硬化性シリコーン樹脂(ポリオルガノシロキシシルアルキレンを含む)]、長興化学工業製
X-21-5841:商品名「X-21-5841」[縮合反応硬化性シリコーン樹脂(シリコーン二液型RTVゴム)]、信越化学工業(株)製
KF-9701:商品名「KF-9701」[縮合反応硬化性シリコーン樹脂(変性シリコーンオイル)]、信越化学工業(株)製
TB3030:商品名「TB3030」[硬化性アクリル樹脂]、(株)スリーボンド製)
また、蛍光灯の映り込みが○又は△の評価であった本発明の実施例の光半導体装置の算術平均表面粗さRaは、いずれも0.10~1.0μmの範囲にあり、適度な凹凸形状が形成されていることが確認された。
さらに、本発明の実施例の光半導体装置の全光束は、いずれも0.60lm以上であり、良好な照度を示した。
一方、表2に示されるように、本発明の所定範囲より少ない配合量で多孔質フィラーを配合した比較例2、及び多孔質でないシリカフィラーが添加された比較例4~6の光半導体装置は、蛍光灯の映り込みが×(不良)と評価され、算術平均表面粗さRaの値も低く(0.1μm未満)、フィラーが添加されていない比較例1程度の反射防止機能しか示さなかった。比較例2では多孔質フィラーの配合量が十分ではなく、また、比較例4~6ではシリカフィラーが沈降した結果、表面に均一で微細な凹凸形状が形成されていないと考えられた。一方、本発明の所定範囲より多い配合量で多孔質フィラーを配合した比較例3では、良好な反射防止機能を示す一方、全光束が0.46lm以上であり、照度が著しく低下した。多孔質フィラーの配合量が多いため、光が吸収されたと考えられる。
101:金属配線(電極)
102:光半導体素子
103:ボンディングワイヤ
104:封止材(反射防止材)
Claims (8)
- 多孔質フィラーが分散された樹脂層からなる反射防止材であって、当該多孔質フィラーは当該樹脂層の表面に反射を抑える凹凸を形成し、反射防止材全量(100重量%)に対する多孔質フィラーの含有量が4~40重量%であることを特徴とする、反射防止材。
- 多孔質フィラーは、無機多孔質フィラーである、請求項1に記載の反射防止材。
- 硬化前の反射防止材は、液状である、請求項1または2に記載の反射防止材。
- 硬化前の反射防止材の全量(100重量%)に対する硬化中に揮発する成分の量は、10重量%以下である、請求項1~3のいずれか1項に記載の反射防止材。
- 前記樹脂層は、透明な硬化性樹脂組成物からなる、請求項1~4のいずれか1項に記載の反射防止材。
- 前記硬化性樹脂組成物は、エポキシ樹脂、シリコーン樹脂、及びアクリル樹脂からなる群より選択される少なくとも1種の硬化性化合物を含む組成物からなる、請求項1~5のいずれか1項に記載の反射防止材。
- 光半導体封止用樹脂組成物である、請求項1~6のいずれか1項に記載の反射防止材。
- 請求項7に記載の反射防止材により光半導体素子が封止された光半導体装置。
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CN114262530A (zh) * | 2022-01-06 | 2022-04-01 | 山西日盛达太阳能科技股份有限公司 | 一种减反射镀膜溶液、制备方法和光伏玻璃及其制备方法 |
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CN108369985B (zh) | 2022-04-29 |
JPWO2017122691A1 (ja) | 2018-11-01 |
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